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This is one of the first computers that I ever got when I was around 8. Good old times. Thanks for the video!
Thank you! Glad you enjoyed the video. :)
I am 25 now and this is my first pc and using now only 😂😂
Same
Hey this is an awesome thing you've done with your 780! Really the most informative video around on this hardware.
Thanks!
I have my A+ and Net+ but could still use a class taught by you. Seriously.
Thank you! A wonderful compliment. Glad to help. 🤗
Thank you man you have helped me understand what is really the problem in my 780, am going to a junkyard or a used store to get a new PSU.
Fantastic! Glad to help. 😀
Great video. One small point: at 4:12 he states that there are only 2 USB ports built in.There are 4 more out the back!
He meant only 2 USB ports built in on the front.
Yes, that should have been obvious but thanks for pointing it out. Thanks! :)
Thanks for the trouble shooting video and teardown Mike Smith my father bought a refurbished one for a lady friend who somehow managed to brick it in 72 hrs ,best buy purchase and bad tech support .ie in to store for repair work and no joy at all .
Hi! I'm not sure if you're asking me a question? "Brick it" is not really a technical term, does it appear to be a hardware problem or a software problem? Good luck getting it repaired!
@@CompTechMike an odd couple thoughts talking with the dad ref the PC and best ideas said its a bad boot drive .failed drive boot message , so break my spares
hello! when i go to take off the optical drive cover (where you pull the tab and push it back) it doesn’t work. could it possibly be jammed? how do i fix this?
Hi! Thanks for the comment. I assume you mean the blue tab where you lift up and push the optical drive back shown at 3:15 , correct?
Yes, those can jam or bend if a drive was improperly inserted in the case or if something heavy was placed on the case at any point. Tough to say without seeing it. I don't really have any tricks or secrets, just keep trying, wiggle each component a little bit, and maybe also squirt a bit of WD-40 down there to loosen things up. I've also seen a few cases where the spring popped off, you might be able to get down in there with a narrow flatblade screwdriver to push things into the right spot. Keep trying, it should come out eventually. Good luck!
I’ll try the pre bios test on mine, it’s a pita failing to boot with just the number 1 error led lot. This is supposed to mean ‘unable to see memory’ but it was working and I’ve tried each stick in each slot and it’s the same wherever. PSU is good, cpu looks good cmos cleared and back up battery good I can only imagine it’s a dirty contact or a failed m’board.
Good luck! Try with just a single stick and cleaning the contacts with 99-100% isopropyl alcohol (not that 50% junk).
hi Mike.I just had the power switch component changed. the LED light comes on when pressed. But the front start button wont respond. Is it the BIOS battery on the motherboard that needs changing? And is there a particular model or just a supermarket available battery? Non-techie learning fast. Pls advise. thanks
Hi! Thanks for the comment. I'm not exactly sure I understand your issue. When you press the power button a few things should happen including the lights on the front flashing, the fan starting to spin, the hard drive spinning up, and eventually the display coming on. Is your system not powering on at all? What color is the power light (green or amber)? Dell Optiplex's have a bank of lights across the front numbered 1-2-3-4. Are any of them lit up? I would start checking those items first.
The battery on the motherboard is a standard CR2032, available at most places that sell watch batteries (Walmart, Best Buy, Amazon, etc.). A dead battery would not prevent the computer from turning on, however it would prevent the computer from saving all of the important BIOS settings. If the battery has failed you'd get a warning on the screen indicating that it has failed and prompting you to configure the BIOS. Hope this helps!
@@CompTechMike Hi Mike, ok here's the full story. Power Supply component got replaced yesterday & coin battery changed. The start button at the front is blinking orange and numbers 1 & 3 are lit up. Fan works. What could be wrong?
@@jesjes1275 Hi! Diagnostic LED's 1 & 3 usually indicate a memory issue. It may be an issue with the RAM chips themselves (try taking out all but one stick and see if it works then), or the memory interface on the motherboard. Go back and double-check all the power supply connections, including the 4-pin connector near the processor. After that I'd try swapping the RAM. If you are unable to get it to work with a single stick of RAM in any slot than the issue is most likely with the motherboard. Motherboards for these systems can usually be found on Ebay & Amazon pretty cheap.
More info on diagnostic LED's:
www.dell.com/support/article/en-us/sln284978/a-reference-guide-to-the-dell-optiplex-diagnostic-indicators?
www.manualslib.com/manual/678395/Dell-Optiplex-780.html?page=15
Good luck!
Thank you this really helped! I just got one!
Fantastic! Glad this helped. :)
thankyou so much for taking time to show us how to do it ,i have a question my mother has a computer like this one but when i turn it on it stays on for about 5 to 10 secs and then i cant see nothing on the screen do you think it could be the power ?
Hi! Thanks for the comment. Re: your mother's computer, does anything show up on the screen at all? Are you able to get into the BIOS? Do the power lights come on, or the fans spin?
I've the same problem like this.When i press power button,suddenly the system is running and i can't see nothing on monitor.All fans are spinning normal.I'm using Dell Optiplex 760.
(Sorry for my English)
@@modernzeus7021 Are you sure the system is running? Are you seeing hard drive and activity lights on it? Try checking all of your video cables, connections, and verify that your monitor is working correctly. Also if you have an aftermarket video card - try reseating it, or remove it and test the PC with just the native/built-in video output. Good luck!
Hi,i have this 780 and i use for while but today i turn it on and starting to hear a continously beeping noise in my monitor shows press to inter configuration
Hi! Sorry to hear that. Beeping usually means some kind of hardware issue. Are you also getting any trouble code lights along the front?
I would start by working through the troubleshooting steps shown in this video and mentioned in the comments. Start by double-checking all of your cords and connections, make sure everything is connected properly. Then take out all of the memory except for one stick, and all expansion cards, and see if it will boot then. Swap the ram around and give everything a good cleaning. If you get any of the 1-2-3-4 error lights or a specific beep sequence, look that up in the Optiplex 780 troubleshooting manual. Most likely it is a bad or loose stick of ram, but even if it is something more significant (like the motherboard) you should be able to get parts cheaply on sites like Amazon or eBay. Good luck!
While watching TH-cam screen went dead and I got six beeps. I rebooted and got six beeps on startup. I rebooted a couple of times and it started working normally for a few minutes and then poof six beeps. As I understand it, six beeps is a graphics card issue. I took it apart thinking to replace the graphics card, but there was no graphics card installed. Any suggestions as how I should proceed? Thanks.
Hi! Is this an OptiPlex 780? The manual doesn't indiciate a six beep code error:
www.manualsdir.com/manuals/621892/dell-optiplex-780.html?page=23
What lights are lit on the front? The 1-2-3-4 lights? Those are usually more revealing.
jsmcomputers.com/pub/pdf/optiplex%20780%20SFF.pdf
That said, the usual troubleshooting steps for hardware are all applicable. Remove every extra part and all but one stick of RAM and see if it will boot then. Try the RAM in different slots. If it works like this, add components back one-by-one until you find the failure. You can also run BIOS-level diagnostics (assuming the machine will boot to BIOS) to help identify issues. Good luck!
hello Smith can you help me out my optiplex 780 won't start but it blinks and displays number 3 but won't start
Hi! Thanks for the comment. Here is a link to the troubleshooting manual:
images-eu.ssl-images-amazon.com/images/I/B1cEeKjqcPS.pdf
According to the manual, a blinking "3" indicates a processor failure has occurred. I would try removing, cleaning, and reinstalling the processor (using new thermal paste). You should also remove any upgrade cards and all but one stick of RAM for testing purposes. If the problem persists after that you could try either a replacement processor or a replacement motherboard. In my experience it's more likely for the motherboard to have failed, but the processor itself could also be bad.
Personally I'd swap the processor first (since it's easiest). If problem persists replace motherboard. Fortunately both components are cheap and easy to obtain on sites like eBay and Amazon.com. Good luck!
@@CompTechMike Thank you very much i will try it out now
Im having the blinking orange light issue with my 780 MT. Usually its 3 and 1 blinking with orange after using the PS bottom in the back sometimes just 3 flashes. And sometimes when i do the jumper with the password reset to the RTCRST it stays only solid ambar, til i move back the jumper then starts blinking again with 3 and 1 light. , No beeps aside from tiny electric noises from the int speaker, fan works no sign of any burnt , i actually managed to turn it on several times before pressing the PS bottom and power b but after a power outtage i was unable to do the same.
Hi! If you do the jumper to clear CMOS it's not going to boot. This is normal behavior. The button on the back of the power supply is to verify if the power supply works. If you press it and the fans start to spin, it means you have power reaching the board.
Try removing all cards and accessories and all but one stick of memory. You may need to alternate which slot that memory is installed in, and try a different memory stick. Basically remove or swap all of the easily removed and/or swapped components. Does it boot then?
A guide to diagnostic codes can be found here:
www.dell.com/community/Optiplex-Desktops/optiplex-780-no-video-2-3-4/td-p/6074005
Good luck!
Mine won't even turn on, will this help?
Hi! Thanks for checking out my video. When you say "mine won't even turn on", could you provide more specifics? What, exactly, happens when you press the power button? Any lights, noises, fan spinning, etc.? Without more information it's tough to say. Could be anything from a bad outlet or power cord, bad power supply, bad motherboard, etc.
is ok but I have the slimline version, I was hoping for some help? I fitted a new pù but the screen has no signal, there are bleeps that I dont unďerstand yet.
Try checking all the connections from the PSU. Typically there are two - the wide one that goes to the motherboard, and the smaller 4-pin one that also goes to the motherboard, but at the front near where the processor is. Check that one first. Good luck!
Hi Sir, I will like to know, instead of replacing the power supply which I know is the most reliable solution, is it possible to repair it?
If yes, could you make a video on how to repair power supply with this issue?
Hi! Thanks for checking out my video. Yes, the old saying is that anything can be fixed, with enough time/money. I generally try not to mess with power supply internals due to the high voltages that can be present there. Don't particularly feel like getting shocked; it's easier to replace them as a unit. 😉
That said, if I do find myself repairing one in the future, I'll be sure to record a video. Thanks for the suggestion! 😊
Great video. Any idea on which series/models of a Dell SFF would use a CPU that has AES-NI support? I was thinking of re-purposing one for a PFSense firewall box. Thanks for the great content!
Hi! Great question. Wikipedia has a list of which Intel processors support AES-NI. Older systems like the Optiplex 780 in this video won't, but something a little bit newer like a 3020 (which generally have 4th gen Intel processors) should support this feature. 3020's are rapidly being decommissioned by most of the companies I work with, we've got hundreds sitting on a shelf right now waiting to be recycled. If that model works for you you can probably pick one up cheap. Good luck!
en.wikipedia.org/wiki/AES_instruction_set
en.wikipedia.org/wiki/Dell_OptiPlex
@@CompTechMike Excellent. That info was very helpful. I know I could just buy a PFSense pre-built device, but what fun would that be when I can experiment and learn by acquiring used equipment and tinker!! :-)
Thanks a lot for this video.
It is very well detailed
Hi can you help i have same computer it's not powering up, the just spin the fan and stops light does not stay on. I already change the battery power in back and the battery i/o power in front still not powering up.
Thks
Hi! Thanks for commenting on my video. It sounds like you have power since the fans are spinning momentarily, correct? Have you checked that everything is physically connected and tight inside the case? Especially the connectors between the power supply and motherboard. Is the power light by-chance lighting up amber/yellow color? If so, I'd start by removing any expansion cards and all but one memory stick. Try again in that configuration. You may also swap memory sticks to different slots, just to rule out an issue with an individual stick. Also, are any of the 1-2-3-4 diagnostic lights lighting up on the front of the case? These can help point you in the right direction, based on the troubleshooting manual:
www.dell.com/support/kbdoc/en-us/000126021/a-reference-guide-to-the-dell-optiplex-diagnostic-indicators
If you've already done all these things and the machine is still not powering on, it's most likely you've suffered a motherboard failure. Unfortunately the motherboards aren't easily repairable, but they are easy to swap out with basic hand tools. You should be able to buy a replacement motherboard on sites like amazon or ebay for around $40-$50 USD. If you've watched my entire video it should be pretty clear how to remove the board. Hope this helps!
Thank you will check or may just send to technician guy. Appreciate your help and time👍🏾@Mike Smith
Dell gx 780 yellow power lights 1and 2 problems
Hi Malik! Thanks for watching our video. Check out the OptiPlex 780 service manual at this link:
www.manualslib.com/manual/678395/Dell-Optiplex-780.html
Page 16 shows that 1-2 lights mean "a possible expansion card failure has occurred". I would start by removing all expansion cards, cleaning any edge connectors, and reseating them one-by-one. See if it boots with no cards installed, then add one back, then one more, etc. Good luck, let us know if you figure it out!
my desktop power button billing orange light when i press to boot it. need help
Hi! Is it a 780? Are you getting any of the 1-2-3-4 error lights lit up? These error codes can be found in the troubleshooting manual (available online) and can help point you in the right direction.
Also I recommend removing all add-in cards and all but one RAM stick, and testing like that. Test with each RAM stick, in each slot. This will help you identify if there is a bad component. Good luck!
@@CompTechMike nope! when i attach jumper for reseting bios, it shows me 2&4 numbering and red power button alert but in normal pushing red light on front button
@@thestars8941 Hi! Is this an Optiplex 780? If so, A 2-4 error could indicate a video card error. Have you tried all of other suggestions already? Including removing all cards and only one stick of RAM, and seeing if it's able to boot then? Worst case scenario you may need to replace the motherboard. This can be accomplished with basic hand tools in less than 30 minutes. Replacement motherboards are generally available for around $30-$40, depending on your specific form factor (USFF, SFF, MT, or DT). But I'd try all those other things, first. Good luck!
www.dell.com/support/kbdoc/en-us/000126021/a-reference-guide-to-the-dell-optiplex-diagnostic-indicators#2009_to_2012
Will ryzen 5 5500 and rx 6600 fit the motherboard of this case?
Hi! Thanks for the comment. The Dell Optiplex 780 shown in this video shipped exclusively with Intel processors, such as the Q9650. You will not be able to fit an AMD processor without changing the motherboard. Hope this helps!
do these still have value i have about 13 of these and 4 of them don't work should I fix it or not?
Hi! Thanks for the comment. Whether or not something has value is a pretty subjective question, don't you think? Depending on what processor, RAM, video, and storage is installed, the cost of upgrading them may exceed the cost of just buying a new computer. In that case, I wouldn't say they have much value.
But for me, personally, what I do is fix them up, add a WiFi adapter (around $13), install the latest version of Windows 10, a few utilities, productivity suite, and set them up so they run well, then sell them for a couple hundred bucks along with a monitor and new keyboard/mouse on Facebook Marketplace and Craigslist. Because I know that the computers I build are better configured than some bloatware-filled junk you might buy at Walmart or Best Buy. I even make videos of my computers before I sell them, so people know exactly what they are getting.
Anyhow, that's just my .02 cents. I believe they have value because if you set them up right they can still work well and be of value to someone else. Cheers!
I have a problem with my Dell Optiplex 780 . At every start up it gives a message"The Dell encryption accelerator that was used to encrypt the system is not detected . Strike F1 to continue, F2 for setup utility or F5 to run onboard diagnostic . How can I get rid of this message every time I start my PC
Would appreciate receiving a solution to my problem . rgds
Hi! Thanks for the comment. I'm not too familiar with that particular error message but it sounds like at some point either yourself, or someone who had access to the machine, installed DDP - the Dell Data Protection utility - and now that utility is either broken, no longer functioning correctly, or the key has been lost. You didn't mention do you have unaccessible data encrypted on the machine or not? If you do not, I think the easiest way would be to just "nuke it from orbit" -- do a fresh reinstall of the Windows operating system from a flash drive. There are hundreds of links showing how to do this, here's one to get you started:
th-cam.com/video/zwxsDOrIlxY/w-d-xo.html&
This process will completely erase the hard drive and give you a fresh installation of the operating system. You can use it for either Windows 10 or 11, although with the age of your system I'd recommend sticking with 10. You can then reinstall all your system-specific drivers from Dell's support website and any tools and applications from the specific providers.
If you *do* have files and data saved on the machine that you currently can't access, you'll need to either reach out to Dell's support or to a company that specializes in recovering data off hard drives such as DriveSavers or Kroll Ontrack. Given the age of the machine I don't think Dell is going to be much help; recommend contacting a data recovery firm to regain access to your data.
In summary: if you don't have any data on the machine, format the hard drive and reinstall Windows. If you do have data on the machine that you can't access, contact a data recovery firm. I would personally never recommend using Dell's encryption tools. If you want to encrypt your data use Microsoft Bitlocker, and always store a copy of your recovery key in a safe location.
This thread on Dell's support site may be helpful:
www.dell.com/community/Laptops-General-Read-Only/Dell-Data-Protection-Encryption-Problem/td-p/4527366
Good luck!
@@CompTechMike
Dear Mr Mike Smith
Thank you very much for replying.
Let me explain that initially my system had HDD 80 GB any every thing was working fine .Recently I removed 80 GB HDD and mounted
250 GB HDD since then this error message appeared . I hope this point would give some idea about the problem .
Waiting for your expert
Guidance
Best regards
@@212wahid1 hi Wahid, without having the system in front of me it's impossible to tell exactly, but if I had to guess it sounds like the original 80GB hard drive was encrypted with the Dell encryption tool I mentioned previously. And whomever performed the upgrade did not properly migrate the data from its encrypted state onto the new drive.
My recommendation would be to put the old hard drive back in, remove all of the encryption, and then re-migrate the unencrypted data back onto the new drive. There are various tools and utilies that can help with the migration. Alternatively, put the old 80GB drive back in, back up your data to a portable external hard drive, then install the new drive, perform a fresh install of Windows on it, and then copy back your data from the external backup. Good luck!
@@CompTechMike
Dear Mr Mike Smith
Thanks a lot for your quick response . I will follow your advice and
Intimate you with the result.
Thanking you once again.
Best regards
Hello when i unplung the internal back yellow wire for display the test button works but when i plug it in and press test buttonndoes not turn greennjust hear a click 1 and light and amber light no boot could it be a faulty motherboard
Hi! Thanks for the comment. I'm not really sure I understand what you are describing. There are two cables going from the power supply to the motherboard. The large ATX-style connector, and the smaller 4-pin black and yellow wire that connects near the processor. Neither of those are for the display. Both must be plugged in in order for the computer to operate. There are additional cables for the drives but these don't need to be plugged in for the computer to be able to turn on.
The test button on the back of the power supply is for testing the power supply. If you press it with the computer off, the fans should spin. This will indicate that the power supply itself is working. If you press the main power button and nothing else is functioning and the computer is not turning on (no lights, no beeps, no 1-2-3-4 error codes), then your issue is typically the motherboard. Occasionally it may also be the power button itself, the panel the button is on, or the cable that connects it to the motherboard, but those components going bad is rare. The motherboard is much more frequently the issue, in these cases.
You can typically buy a correct replacement motherboard for around $40 on sites like Amazon and eBay. You will need to make sure you get the right one for your particular model, then follow the instructions and commentary in this video to replace it. Good luck!
Sorry let me explain i ahve an optiplex 780 ssf like your but a smaller suply indont know the excastbmodel but when i plung the buttonnturnsbgreebi beleive utsna board failure ivthink one of the capcitors are lose ia thia possibe
@@Fashahzad I'm sorry, I don't understand what you're saying. Based on your description it sounds like your motherboard has failed. These are common components and can be bought on sites like Amazon and eBay for around $40. You will need to buy the correct model to match your particular PC. Usually search for "Optiplex 780 motherboard" and narrow it down from there based on form factor (either USFF, SFF, DT, or MT). Good luck!
hello mike, i need help with my optiplex 760 mini tower. it boot up but then it died immediately after it booted up for a several minutes. i replaced the cmos battery already but nothing changed. i hope you can help me thanks
Hi! Thanks for the comment. Is it powering up currently? You need to rule out whether it is a software issue or a hardware issue. Can you get in to run the BIOS-level hardware tests? I would start with those. Good luck!
Thanks for the video, can you tell me if an atx psu can fit this chassis?
Hi! Thanks for the comment. No an ATX PSU will not fit in this chassis. Dell typically used the BTX form factor in this generation of systems. They came in MT, DT, SFF, and USFF sizes, respectively (mini tower, desktop, small form factor, ultra small form factor). You won't be able to fit an ATX PSU without a lot of hacking and chopping. On the bright side you should be able to find a replacement power supply of the correct size on Amazon or Ebay for around $20-$30, if you need one. Good luck!
how you change the fan
Hi! Assuming you have an Optiplex 780 DT chassis machine as shown in this video, you would remove the motherboard and other components (as shown / talked about in this video). Once the motherboard is out the front fan is just held in with one plastic clip. You may be able to remove it without removing the motherboard but you won't be able to get the new one in. You need to remove the motherboard in order to have enough clearance to fit the replacement. Hope this helps!
@@CompTechMike thanks i need help
@@demorrieuspowell2875 hope you're able to get it. If not, pretty much anyone who's familiar with working on computer hardware should be able to change this part out. Good luck. 😊
Hello i have one lights 1 and 3 the power supply button is green but i think it could be that because the computervgets litle power for 2 sec
Hi! Thanks for the comment. 1-3 usually indicates a memory error. I would try removing all but one stick and trying that in a couple different slots. Check out this link for more info:
"Solved: Dell Optiplex 780 Error Messages/Diagnostic Codes Power Button and then 1 and 3 number lights flash - Dell Community" www.dell.com/community/Desktops-General-Read-Only/Dell-Optiplex-780-Error-Messages-Diagnostic-Codes-Power-Button/td-p/5116765
Hello again but do you think it could be a motherboard faliure because when i press the green the fans will spin itbshows 5 bit sometimeflickers to 1 and 4 and before whenb
got this pc it worked finenfor a day a noise was coming from the hard coller thing. After that it showed 1 and 3 the green button did not ligh like said before now there is no 1 and 3 now its
5 and flickers to 1 and 4. I tried removing memory stick no effect do you think it could be the motherboard or power supply one of them is causing the issue
It also wont it blink amber light
@@Fashahzad Hi again! Is there a small button about the size of a pen tip on the back of the power supply? Not all power supplies have them, but if yours does you can use this to test the power supply (press button when computer is off, if fans spin power supply should be okay).
If all other tests pass and you still cannot get it to power on, I would recommend replacing the motherboard. At my old office where I had many of these machines, I always kept a stack of spare boards. You can usually find them on sites like eBay or Amazon for around $40. Just make sure you get the correct board for your case size. They're pretty easy to replace, if you watch the whole video I talk about that. Good luck!
@@CompTechMike hello yes the hard drive cage fan spins and the powersupply do you think these mother boards are fixable would you send me a link were to buy also ahould the front fan be spinning
Is there an internal speaker
Hi! Yes, most Dell business-class desktop PC's have an optional internal speaker. Sometimes called a "business audio speaker" it is usually about 1" in size. On the DT chassis shown in this video it would connect right behind the front grill. On larger chassis' machines (such as the MT "mini tower" chassis) it would sit above or near the hard drive cage. They plug into the motherboard with a small 3 or 4 pin cable that usually has a white connector.
Hey, I have this Ram problem on my 780, is there a way to fix it?
Hi! Thanks for the comment. When you say "I have this RAM problem" could you be more specific? What problem are you having, exactly? There are several different types of problems, and several troubleshooting steps you can take to help resolve them.
First, I'd recommend you start by removing all but one stick of RAM. Try it in different slots. If your problem is that you have a single bad stick, this will help you to determine which stick is at fault. You can also run the built-in BIOS hardware tests (press F12 after turning the machine on) which will test your memory.
Also, across the front of the machine, are the lights 1-2-3-4. If you get a specific sequence of lights or a beep code, try looking that up in the Optiplex 780 Technical Manual (link elsewhere in the comments, or you should be able to google it).
Worst case scenario if it's your motherboard at fault (rather than a stick of RAM), replacement motherboards are available on sites like Amazon and eBay starting at around $40 USD. Just make sure to get the correct size board for your case (either USFF, SFF, DT, or MT). Good luck!
@@CompTechMike it has this error code 1 3, the computer keeps shutting down every 3 to 5 to 10 minutes.
@@CartoonFinder Hi! You can download the full technical guidebook on Dell's website, here:
www.dell.com/learn/us/en/04/business~solutions~engineering-docs~en/documents~optiplex-780-tech-guide.pdf
And the service manual is here:
images-eu.ssl-images-amazon.com/images/I/B1cEeKjqcPS.pdf
Per the service manual, 1-3 indicates an issue with the video memory. If you don't have a separate video card the video memory is shared from the main system memory. I would suggest you start with all of the troubleshooting steps I listed above with regards to identifying which memory stick is bad. Also running the built-in BIOS-level hardware tests on each individual stick of memory would be helpful to identify which stick has failed. Good luck!
This video was very helpful. My system won't boot properly anymore. I back it up every 2 days. I restored a backup I did from Aomei Backuper and it still doesn't work. Upon bootup, even before loading the hard drive the screen displays strange characters, and then when I hit F12 it brings me to the bootdevice menu - but half the characters are not there, I can only see some. I had to watch your video to make out what those options are. Sometimes it goes a little further and tries to load windows - I see the windows background screen appear but it doesn't go all the way and reboots again. I was able to get into safe mode yesterday but having trouble getting that far today. Any ideas on what's going on, and what I might do to resolve this? Thanks Mike.
It's the exact same dell optiplex 780 as you have in the video.
I removed the graphics card and plugged monitor to main board vga ouptut and am able to see menu items clearly now. I can see the device boot menu now clearly. When I press F8 I can also get to a menu which offers different options for safe mode, but each time I try safe mode, it starts to load windows then reboots again. Sometimes it tries to do the "startup Repair" but always ends up saying "Startup repair cannot repair this computer automatically"
Hi! Thanks for the comment. Based on your several comments it sounds like you're already doing some troubleshooting. That's great! If I'm reading right, it sounds like removing your graphics card resolved the display issues. So you may have a faulty 3rd party graphics card. It could also be a loose or dirty connection on that card, so maybe something you can fix.
Also you mention the computer is unable to boot to Windows, even in Safe Mode. Just to rule out any further hardware issues I recommend you press F12 and run the built-in hardware diagnostics. This will test hardware including CPU and RAM.
If all hardware tests pass and the computer is still unable to boot, it's likely you have a corrupt operating system. You can try creating a bootable USB flash drive to use some of the advanced recovery options. Worst case scenario, format the hard drive and reinstall Windows - that will fix any OS issue, LOL. There are some other steps you can take, but I'd recommend first running those hardware diagnostic tests and seeing if you can use any of the advanced recovery options ("Repair your computer") available on a recovery disk or USB drive. I show how to create one of those in this other video:
th-cam.com/video/zwxsDOrIlxY/w-d-xo.html
Good luck!
@@CompTechMike Thanks Mike. I removed the graphics card and was able to restore my backup and it loaded back into windows without the graphics card. When I put the graphics card back in there were problems again. Reading some comments here and your answers helped me to get the idea to remove some elements down to the basic (ie the graphic card) to see if I can isolate the issue. That lead me to find it and solve my problem. Thanks so much!!!
I rand the hardware tests adn they passed fine. Was able to boot into windows fine. Today when I tried to open excel, and open one of the files in recent history, it just crashed and restarted. Same thing next time. Every time I opened a particular file in recent history or the autorecover of that file. Would I need to uninstall/reinstall or repair excel? Looks like it has problems. Any ideas on what could be going on and what you would do to troubleshoot, or resolve it? Thanks.
Sir I have Dell optiplex 780 orange light appears on power button
And 1 2 error appears and no display
Plz help
Hi! Thanks for the comment. The 1-2 lights indicate a possible expansion card failure has occurred. I would try removing all expansion cards and all but one stick of memory and see if the system is able to boot normally. If it is, re-add each component (RAM, expansion cards, USB accessories, etc.) one at a time to try to identify which component may have failed. Sometimes it's just a matter of removing & reseating all of the cards or cleaning the slots.
You can read more about the troubleshooting codes in the manual, here:
www.manualslib.com/manual/678395/Dell-Optiplex-780.html?page=16#manual
Worst case scenario you may need to replace the motherboard, but those can usually be found pretty cheap on sites like ebay and amazon. Good luck! Let us know how it works out.
Hello any cses that will fit
Hi! Thanks for the comment. These Dell systems use a proprietary style of case and motherboard (commonly called "BTX"). As such the motherboard will not fit in a standard ATX style computer case. Likewise an ATX motherboard would not fit in a BTX case. I mean, you could probably "make it fit", but not without a lot of hacking. If your case is damaged, it is best/easist to get a replacement case in the correct form factor for your particular system. 😆
Even I too have same optiplex 780. I wanted to know whether I can put different psu on it or not?
Hi! Thanks for the comment. To answer your question, generally, no. Dell uses a proprietary form factor of power supply and different types of connections. Anything other than a direct replacement would be pretty challenging to make work / fit inside the case. On the bright side these Dell systems are pretty common. You should be able to pick up an exact replacement PSU for pretty cheap on sites like Amazon or eBay. Good luck!
@@CompTechMike I've heard that certain adapters are available. Will changing the pc case work???
@@dronefan4763 Hi! I mean, you can do whatever you want, but the Dell motherboard is not designed to fit in a standard computer case. Dell for a long time used what is called a "BTX" motherboard. Most aftermarket computers that people build use what is called "ATX" or "MATX" motherboard. Basically the Dell motherboard is backwards and won't fit. Google "btx to atx conversion", there are a few videos and links on this topic. My personal opinion is that unless you are getting these parts for free (and just want to mess around) it's not worth it. You'll spend more time than it's worth. Just get the correct power supply, I see them available on eBay starting at $20 bucks. That said, if you do go through with the conversion, post a video. Good luck!
@@CompTechMike I live in India. Currently I am not getting it in our online stores . Shipping from US will cost me around $20. So total cost is around $40-$50
@@dronefan4763 Ah, that does make it more challenging. 😥 Good luck!
Do you need to open the cd rom to add a ram ?
Hi! Thanks for the comment. I'm not sure this question is worded the way you meant to word it. No, of course you don't need to open the CD drive to add RAM. The RAM goes underneath it, and it may help to remove it. But you don't need to open it. 🤣
Ok, thanks
Do you have any links to that graphics card?
Hi! Thanks for the comment. I have around 75 of these Radeon R7 250 low profile video cards to support the office PC's that I bought around 2014-2018. Unfortunately it looks like they are no longer available new. I do see listings for similar model cards including 7750's on sites like Newegg and Amazon. I like to do most of my searching on Newegg Business website - they have really good dropdowns for searching products to help you narrow down what you're looking for. Good luck!
Same computer, woke up to a black screen asking for password.???
Never had a password.
F2, f12 nothing works to boot safe mode, what can I do????
Hi Sueann! Tough to say without seeing it. Can you post a picture of the exact screen you're seeing (using something like Imgur)? Could it be asking for a Bitlocker encryption password? Or a BIOS password? This could also be caused by some viruses or malware.
You can try using the motherboard jumper to clear the BIOS settings, but without knowing what condition is actually prompting for a password it's tough to say if this would help.
I put a video up on my page didn't know how to add it here.
@@sueannsoto7299 Hello! That looks like the BIOS password. Check out these links to reset via the motherboard jumper:
arran.physics.gla.ac.uk/wp/igr-it/2016/08/02/reset-bios-admin-password-on-optiplex-780-sff/
www.dell.com/community/en/conversations/optiplex-desktops/optiplex-780-locked-bios/647f83b5f4ccf8a8de289667
Note that if you reset the BIOS, you'll need to press F2 to go back into BIOS settings (after the reset is complete) and reconfigure any custom BIOS settings that may be present in your machine. For example, selecting the wrong drive or RAID type in BIOS can cause the system to not be able to boot.
I don't have any 780's here but do still have a few at an old satellite office. Let me know if the above links don't help and I can try to get more info for you. Good luck!
Ok that helped lol I am back to user screen have the loading circle and welcome but doesn't load.
Omggggg thank you it loaded on its own.
I think what happened was my cat laid on the keyboard all night.
i cant open the case should i unscrew it ??
Hi! Thanks so comment. Assuming you have an Optiplex 780 like shown in this video, you can't open the case by unscrewing it. You need to slide the "locking tab" on the top back towards the back, which will allow the side panel to be released. You may need to pry on it a bit with your fingers or a flat screwdriver if the panel is stuck or hasn't been opened in a long time. Sometimes a little bit of WD-40 helps, as well. Good luck!
@@CompTechMike i opened it but orange light :(
@@prodbyabdullah If you are getting an orange light on the motherboard that just means the board has power. If you are getting the orange power button light that could mean a bad motherboard, but it could also mean a lot of other things. Watch the full video and read all of the comments, you will need to do a lot more troubleshooting besides just the orange light. Good luck!
@@CompTechMike i should get a new pc ???
@@prodbyabdullah I mean, I can't really tell you if you should or should not get a new PC. Anything is fixable. Anything can be upgraded. But there is a cost-benefit analysis associated with that. If it would cost you $400 to repair and upgrade your existing PC, or $600 to buy a new one --- is it worth it? What if the cost of parts & repairs exceed the cost of a new one? All of these are decisions you will need to make yourself. Good luck!
se me hace muy dificil entender las esplicaciones por no estar en español..........lastima.
Hi! Google Translate says this says "I find it very difficult to understand the explanations for not being in Spanish .......... it hurts." I'm sorry. Maybe create your own channel with Spanish language videos? Good luck!
What’s the name of the motherboard
Dell Optiplex 780 DT motherboard 0200DY.
Thanks
But quick question? What other motherboards can you use with the dell optiplex 780
@@mitchell7960 Optiplex 780 (as with most Dell systems of that era) use a custom BTX form factor of motherboard. You can generally only replace it with another identical board, or occasionally a smaller variant (for example, a DT "desktop" chassis may be able to fit a SFF "small form factor" board). Nothing else is going to fit without a lot of modifications. Your best option if your board has failed is to pick up another identical one. Fortunately you can usually find these on sites like Amazon or eBay for around $40. Good luck!
Thanks man
This system is old now. I have had one of these for almost seven years. I did replace the power supply just out of interest, as the system I have has a shut down problem when in use, sometimes using the web, sometimes, when it just is idle. The lights, 1, 2 and then 3 and amber. The amber light means the power supply is fine. I have had this problem with the system since last month. The longest so far. A clip here gives a brief show of it. th-cam.com/video/UAPO3qNUYOg/w-d-xo.html
Your link isn't working but I would check the Dell service manual. You can find that on Dell's website, or here:
www.manualslib.com/manual/678395/Dell-Optiplex-780.html
among other places.
Diagnostic lights 1-2-3 appear to indicate "another failure has occurred", which isn't very helpful. I would recommend going through and removing and reseating any expansion cards, memory sticks, check all internal connectors, etc. If possible remove all cards and all but one stick of memory and test like that. Then add each piece back one-by-one, and see if the failure reoccurs with just one specific piece of hardware. You might also try swapping the memory to other slots and running the built-in hardware diagnostics. These systems are old, depending on the environment you're running in you may want to give all connectors a thorough cleaning (for example: with some electrical contact cleaner or high grade alcohol). Good luck, let us know if you figure it out!
@@CompTechMike Quite late. I bought different RAM, so by messing with that, I think the shut down was the cause of the problem for the whole time. Been okay now for two weeks.
I simply use windows 7, with no license key. That is the result of buying second hand, once a system packs up and the use of the old drive, requires a key. I'm typing here on this system.
Thanks
@@blenderocean glad to hear you got it resolved! Bad ram is a frequent cause of issues on these models. There are certain types that are incompatible, despite being the rated speed (has to do with single sided vs double sided and chip density). Glad you got it sorted.
Fyi, these machines are capable of running Windows 10. As Win 7 is no longer supported by security patches or updates, updating to 10 would be a recommendation for security purposes.
do you have any more info about the other back panel option for mounting cards horizontally?
It's a 90 degree adapter that allows you to use full height PCIe and PCI cards. It comes with a separate metal back panel. One of the things I felt about it was that it restricted airflow in the case a lot more than the standard configuration. We had a few of them but I got rid of them when we standardized. Not sure the Dell part number. Did you have any other questions?
just hoping you might have a model number. I've tried searching on eBay but can't seem to get good keywords. the reason I'm interested is because I could mount a larger graphics card using that back plate. thanks for the reply.
I'm sorry, Dell can be pretty obfuscated to find the exact model number for some of these sort of parts. I've ran into the same problem with other components. One thing to keep in mind is that while it will allow you to mount a physically larger card, you may run into problems with insufficient power supply if your card is too large. Good luck!
If i want to install a intel core i7 860 would it fit the motherboard that the pc comes with or would i have to buy a new motherboard
Optiplex 780 does not support that type of processor. Sorry!
@@CompTechMike So then i cant put that processer at all or can i just buy a new motherboard
@@thebotkid554playz6 You would need to purchase and install a compatible motherboard. Speaking from experience, this is not a cost-effective upgrade path for a Dell Optiplex 780. You will have a very difficult time finding a board that fits this system and which also supports that particular processor.
@@CompTechMike Ok thanks i saw a vid of a guy using a optiplex 980 motherboard and using a gtx 1050 and a i7 870
@@thebotkid554playz6 Sure, that should work. As long as the motherboard is the correct form factor to fit inside the OptiPlex 780 case. Although that's not a very cost-effective upgrade - at that point might as well just use a 980. But I suppose if you have spare parts lying around, go for it! :-D
I got this pc for 10 bucks thinking I can flip it but I got a q9400 and rx 550 and 16gb of ram with a ssd and a hard drive so the first problem it wasn’t booting at all took me hours of plugging and unplugging because it said there wasn’t anything in sata 1 and 0 but I fixed it by turning off fast boot for the first boot now I finally got in the pc is very sluggish maybe it’s because it’s old it stutters here and there but the new problem is I can’t play any games csgo valorant anything I can’t play it at all it says
Engine Error
Your graphics hardware does not support all features (CSM needed to run this game.
Device Info:
Marked unsupported: 0
Supports PCF Sampling: 1
DriverName: "Microsoft Basic Render Driver* VendorlD: 0x1414, DevicelD: 0x008C
DriverHigh: 0x000A0000, DriverLow: OXA610AE4
DXLevel: 95, MinDXSupportLevel: 90, MaxDXSupportLevel: 95
I checked the device manager and the rx 550 and the pci serial port and the pci simple communications controller has a yellow exclamation mark next to it I did upgrade the rx 550 driver and upgraded the bios as well I couldn’t find anything for the q9400
@@isaiahwilkes9131 Hi Isaiah! Thanks for checking out my video. The Q9400 is one of the mid-range quad core processors for this machine. If you wanted to upgrade that to something a bit faster, I'd look at Q9550 or Q9650. It's not much of a boost, but a bit better than the Q9400.
16GB or RAM is the max these models can take so you're good there, and it sounds like you got a halfway decent hard drive and graphics card as well. That said, I wouldn't really try to use it for gaming. I mainly do basic office productivity tasks. The 780 line is more than a decade old at this point, and will leave you pretty disappointed if you try to use it for gaming. Can still be useful for basic word processing and web browsing tasks, however.
Regarding the "no boot device" error, I'd go through BIOS and disable any ports that don't physically have a device connected. There's a screen where it says something like "Port 0, Port 1, Port 2". Connect your boot drive to port 0 and disable any others that don't physically have a drive connected in BIOS.
I'm having a hard time understanding the rest of your question. Like I said above, you're not going to have much luck playing games on these unless you only want to play games that came out a decade ago. From the error message you posted it sounds like "your graphics hardware does not support all features" --- it's just saying your hardware is too old.
The OptiPlex 780 is capable of running the latest version of Windows 10 22H2, which is still supported by Microsoft for a couple more years. I'd load that on there and make sure you take off any "bloat" that can slow it down. Also make sure you download the latest drivers for that graphics card from the manufacturer's website (this should fix the yellow exclamation mark issue). For the other drivers you need to download them from Dell's support site. Use it for basic productivity or "retro gaming" and you should be fine. 😉 Hope this helps!
@@CompTechMike hmm i might take the gpu out and get something different then and use the rx 550 for a different build thank you
why won't a CD fit
Hi! Not sure I understand your question. Most form factors of this machine, including the "DT" or Desktop form factor shown in this video, do have room for one standard optical drive. That's pretty dated technology now though. 😉
It runs but no video. Diagnostic lights 3 and 4 flash.
Hi! Try removing all cards and accessories and all but one stick of memory. You may need to alternate which slot that memory is installed in, and try a different memory stick. Basically remove or swap all of the easily removed and/or swapped components. Does it boot then?
A guide to diagnostic codes can be found here:
www.dell.com/community/Optiplex-Desktops/optiplex-780-no-video-2-3-4/td-p/6074005
Good luck!
I figured out the problem. Theres a broken piece on the mother board. Its being trashed
Hi sir Please how to fix this issue Dell optilex 760
Eaglelake VBIOS 2066v19 for Eaglelake to address DP + ABB2 on Gao issue boot algo fixed (messed up DP+DVI to go to VGA in v18) Copyright (C) 2000-2003 intel Corp. All rights reserved.
I'm sorry I don't understand your question.
I've never in my life had a TH-cam video constantly pause on me why is it doing this right now I do not know
Sorry, I don't know. Playing fine for me here. Maybe try in a different browser or on a different device?
Boss my pc is not contineu to why?
I'm sorry, I don't understand your question.
OS or hardware?
I mean not contineu to open
I'm sorry, I don't understand your question.
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notebook repair
try Saankramer Electronic Magazine System (Have a quick look on google cant remember the place now ) ? Ive heard some amazing things about it and my buddy got amazing results with it.
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Sahetol
Huh?