Lenovo T470P power on troubleshooting and data recovery PCIe NVMe SSD drive

This video will be helpful for basic power on trouble shooting for a Lenovo T470P laptop that won't turn on and how to recover the data from the drive if unsuccessful. The video would be helpful for any laptop with a PCIe NVMe SSD drive that requires data recovery. The tricky part was that the drive was encrypted with bitlocker and I could not find my keys. Luckily they are are stored on the microsoft cloud and can be recovered online.

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Can the T470P take an internal battery? or just the removeable external battery?