Think pad T14 gen 3

[renter1962]

Hi

I have two lenovo's that show about the same issue. Both are T14 Gen 3 (AMD) Type 21CF. I'll create a separate reply for the 2nd laptop.

Laptop #1:
MTM: 21CF-CT01WW
SN: PF4EQDYT
PCB: NM-E441 Rev 1.0 (JT4C1/JT6C1/JP6C1)
Extracted BIOS: Attached
BIOS PW: None
Issue: Won't boot, no display, white power light turns on, fan go 100% immediately when plugged. Tried a battery drain, pinhole reset. No success.

Huge thanks!


Is there anything I can do on my side to fix the 2nd laptop?
I tried to open the BIOS dump in HxD and searching for the serial but nothing was found. So I'm guessing the data in the padding regions is encrypted/encoded in a special way.
I wasn't able to extract the binary file from the lenovo download either (iso or exe).
Let me know if there are tools available online that would allow me to fix it without requiring your assistance.
For older Intel based Lenovo I was able to merge my bios extract manually with HxD to the Lenovo bios from their website and it worked well (but it's also a 5 year old computer).

[renter1962]

Hi

I have two lenovo's that show about the same issue. Both are T14 Gen 3 (AMD) Type 21CF. I'll create a separate reply for the 2nd laptop.

Laptop #1:
MTM: 21CF-CT01WW
SN: PF4EQDYT
PCB: NM-E441 Rev 1.0 (JT4C1/JT6C1/JP6C1)
Extracted BIOS: Attached
BIOS PW: None
Issue: Won't boot, no display, white power light turns on, fan go 100% immediately when plugged. Tried a battery drain, pinhole reset. No success.

Huge thanks!


Is there anything I can do on my side to fix the 2nd laptop?
I tried to open the BIOS dump in HxD and searching for the serial but nothing was found. So I'm guessing the data in the padding regions is encrypted/encoded in a special way.
I wasn't able to extract the binary file from the lenovo download either (iso or exe).
Let me know if there are tools available online that would allow me to fix it without requiring your assistance.
For older Intel based Lenovo I was able to merge my bios extract manually with HxD to the Lenovo bios from their website and it worked well (but it's also a 5 year old computer).

Ignore my previous post. I realized today that I extracted the EC and not the BIOS. BIOS is on a WSON8 and it's a quad SPI chip so I have to rethink my approach.

[gsmdon]

Hi bro! There is an at Lenovo T14 gen 3 laptop, it turns on, but there is no image
s/n PF-40QRC2 Type 21AH-00BSUS
I can't find the bios, and I can't create
Please help me!

[hoaca388]

Hi bro! There is an at Lenovo T14 gen 3 laptop, it turns on, but there is no image
s/n PF-40QRC2 Type 21AH-00BSUS
I can't find the bios, and I can't create
Please help me!

Read chip again ,

[gsmdon]

The BIOS is damaged, but the laptop turns on. If you install a new BIOS, the laptop will not turn on
Apparently there's a serial number in the bios somewhere.
Help me make a working bios out of the old and new file.

[hoaca388]

The BIOS is damaged, but the laptop turns on. If you install a new BIOS, the laptop will not turn on
Apparently there's a serial number in the bios somewhere.
Help me make a working bios out of the old and new file.

I am completely sane when I ask you to re-read the bios chip, and I also understand that the bios file is corrupted. This error is caused by the programmer. So re-read the bios chip as requested.

[gsmdon]

Sorry, there was a power surge and the laptop stopped working. It turns on, but there is no image, and there is no initialization. I counted the old bios and recorded a new one, it doesn't start at all and doesn't raise 20 volts. The old bios is flooded, it starts, but there is no image and initialization rises 20 volts. I understand that the old BIOS is damaged, but it has a section with a serial number.Without which the new bios does not work.What should I do with the new bios to make it work?