ThinkPad P14s - Gen2 AMD - no boots

[thomasrudolf]

Hello!
I have a Lenovo ThinkPad P14s - Gen2 with an AMD processor that no longer boots.
After replacing the CMOS battery, the power button LED lights up and the fan starts running briefly, but then nothing happens.
Attempts to remove the voltage from the battery/CMOS battery didn't help – even trying to flash the BIOS from a USB stick was unsuccessful.

Sorry for the limited information, but since I can't get the device working, I don't have the ability to provide any further important information.
A repair service has already told me they can't help me because they can't find the problem.

Do you have any ideas?

[thomasrudolf]

I tested the additional RAM and SSD, as well as the display, with an identical T14 series notebook. It has the same motherboard.

[SMDFlea]

Type the laptop serial number, full name and model, motherboard model, etc.
post the contents of the bios chip even if it is corrupted..

read the forum rules..https://www.badcaps.net/forum/troubl...before-posting

[thomasrudolf]

Serial Number is PF3TSA19
Model is 21A0008MGE
Processor: AMD Ryzen 7 PRO 5850U
PCB: HT4B5 NM-D451

How can I post the contents of the bios chip?

[SMDFlea]

Serial Number is PF3TSA19
Model is 21A0008MGE
Processor: AMD Ryzen 7 PRO 5850U
PCB: HT4B5 NM-D451

How can I post the contents of the bios chip?

Did the repair service flash the bios ? .If not then you would need an SPI programmer to backup the contents of the bios chip, you would need to take the laptop apart to do this.

[thomasrudolf]

Did the repair service flash the bios ? .If not then you would need an SPI programmer to backup the contents of the bios chip, you would need to take the laptop apart to do this.

No, the repair service is only checking for a broken capacitor. They didn't find one and then said it was probably due to a lack of grounding when disassembling the notebook. The thermal imaging camera shows a completely unremarkable image.


I will buy an SPI programmer - Thx

[thomasrudolf]

Did the repair service flash the bios ? .If not then you would need an SPI programmer to backup the contents of the bios chip, you would need to take the laptop apart to do this.

Where is the bios chip located?