Well done, but twice bad points to Dell: first for putting a consumable like that battery in a place that's so difficult to access and secondly for making a BIOS which doesn't even allow getting into the BIOS if the battery powering the CMOS RAM is causing the latter to malfunction. They should be able to detect that type of failure and operate with sensible defaults hardcoded into the BIOS to at least give the user some options and decent error indication.
3:47 What does this wire do? I accidentally ripped off this wire and plug when I opened my dell, but absolutely nothing seems to be wrong now. Everything works as normal.
@@these-my2rj Thanks for your reply. I took it apart following your video and got it working but couldn't manage to follow your instructions in reverse to reassemble. A video of reassembly would be very useful for us old guys with poor memory
I have a Dell Latitude E7240 which powers on but no display and no hdmi output, when I plug the charger in the system boots up without display: - Power button led comes on - Hard drive led flashes once very quickly - Battery led comes on for one second - After 4 seconds the power button led goes off - After another 4 seconds the power button led comes back on and stays on, the hard drive led flashes once very quickly The green leds on the actual msata SSD light up If I leave the system in this state then the cpu and heatsinks get hot and eventually the fans will spin (but still no display) Pressing the power button once will turn off the system (cpu will cool down, msata leds will turn off) I’ve tried the following: - Performed hard reset / static discharge, disconnected and checked cmos battery (3v on multimeter) - Replaced RAM, msata, screen with known working - Tried booting while holding down ESC, D, FN keys - Tried HDMI output (no output) I’d really appreciate any other suggestions / tips, could it be a corrupt bios? Thanks in advance
@@Playlouder_ you have to use a CH341A programmer (buy cheap on eBay) with free software, if you are lucky you might not need to disassemble the E7240 (it’s very time consuming) and you might be able to clamp the CH341A connector onto the bios chips (there are 2 bios chips), if the clamp doesn’t connect properly then you’ll have to disassemble the whole laptop to get the motherboard out, basically you have to erase the chips and re-flash with fresh bios files (tricky to find the bios files, but I was lucky I had another working E7240 so I just read the bios chips and saved as 2 files) then used these to flash the bios chips on the faulty laptop. This got the laptop working again HOWEVER there was a delayed boot, approx 1-2 mins delay before the laptop booted into windows, I later learnt this was due to something in ME REGION, so the bios files need to ME REGION CLEANED before flashing to get rid of the delayed boot.. you might not get the delayed boot, it just depends, hope this helps
This worked I just got it to turn on just in time to complete summer school. Thank you for the information. I need to put it back together tho 🥴🥴🥴
Glad it helped!
Your work is price less you saved hy laptop and money thank you
you saved me time and money, thanks a lot.
So hopefully a cmos battery problem for no power to laptop? Awesome video, thank you very much 😊😊😊
Thank you very much, you saved my 💻 there is no words thank you
You are welcome.
Well done, but twice bad points to Dell: first for putting a consumable like that battery in a place that's so difficult to access and secondly for making a BIOS which doesn't even allow getting into the BIOS if the battery powering the CMOS RAM is causing the latter to malfunction. They should be able to detect that type of failure and operate with sensible defaults hardcoded into the BIOS to at least give the user some options and decent error indication.
Thank you very much, it's really helpful video.
Did you put everything in place or not yet
Glad to help you with this video.
great video bro... thanks so much...
Thank you very much for your great video
Thank you too
This Is Awesome!! Thank you very much for your great video!!!
Glad you liked it!
Thank you so much! It worked!
Thanks you very much 🙏🙏🙏
It s work
Thanks bro, it’s work!
Thanks 100% working
Welcome
It works! thank you :)
it worked thank you
Thanks, i fixed my computer.
Glad I could help
Thanks U very much Bro.. it's work...
Welcome 👍
Thank you so much, it worked but now the touchpad isnt working, what might have happened ?
Thank you!
Thanks so help this video 😊😊😊
Most welcome 😊
3:47 What does this wire do? I accidentally ripped off this wire and plug when I opened my dell, but absolutely nothing seems to be wrong now. Everything works as normal.
thank `brother `.solved `on` latitude `e7440
Welcome 👍
The first time was working as you showed me but when I put everything back in place. did not work ,☹️
why does this keeps happening work for some months then the same issue no power on. please help!
My power button does light up and the charhing thingy when i plug it in vut no display
it might be ram issue. try to change the ram slot
Is this permanent solution or temporary?
I tried but nothing. The light blinks & the fan spins then it cuts
Then there might be another issue with hardware.
Can someone please tell me the type of cmos battery I need for this laptop E7240
2032 but it is insulated. Best to buy off eBay for £2
@@these-my2rj Thanks for your reply. I took it apart following your video and got it working but couldn't manage to follow your instructions in reverse to reassemble. A video of reassembly would be very useful for us old guys with poor memory
I have a Dell Latitude E7240 which powers on but no display and no hdmi output, when I plug the charger in the system boots up without display:
- Power button led comes on
- Hard drive led flashes once very quickly
- Battery led comes on for one second
- After 4 seconds the power button led goes off
- After another 4 seconds the power button led comes back on and stays on, the hard drive led flashes once very quickly
The green leds on the actual msata SSD light up
If I leave the system in this state then the cpu and heatsinks get hot and eventually the fans will spin (but still no display)
Pressing the power button once will turn off the system (cpu will cool down, msata leds will turn off)
I’ve tried the following:
- Performed hard reset / static discharge, disconnected and checked cmos battery (3v on multimeter)
- Replaced RAM, msata, screen with known working
- Tried booting while holding down ESC, D, FN keys
- Tried HDMI output (no output)
I’d really appreciate any other suggestions / tips, could it be a corrupt bios? Thanks in advance
it might be ram issue. try to change the ram slot
@@techsbyanoob9656 it was corrupt bios, reflashed and it’s worked
@@darattaqwa how did you do that any link yo try that too?
@@Playlouder_ you have to use a CH341A programmer (buy cheap on eBay) with free software, if you are lucky you might not need to disassemble the E7240 (it’s very time consuming) and you might be able to clamp the CH341A connector onto the bios chips (there are 2 bios chips), if the clamp doesn’t connect properly then you’ll have to disassemble the whole laptop to get the motherboard out, basically you have to erase the chips and re-flash with fresh bios files (tricky to find the bios files, but I was lucky I had another working E7240 so I just read the bios chips and saved as 2 files) then used these to flash the bios chips on the faulty laptop. This got the laptop working again HOWEVER there was a delayed boot, approx 1-2 mins delay before the laptop booted into windows, I later learnt this was due to something in ME REGION, so the bios files need to ME REGION CLEANED before flashing to get rid of the delayed boot.. you might not get the delayed boot, it just depends, hope this helps
@@darattaqwa thanks a lot I’ll try that too! First I’ll try to disconnect the cmos battery, my laptop just died and I don’t know why