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BIOS Lenovo P14s/P15s/T14/T15 Gen 1 NM-C931 BIOS & Boardview

Laptops and Desktop Bios, Schematic and Boardview Files And Repairing Discussion
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File inventory
  • Models: Lenovo ThinkPad P14s, P15s, T14 and T15 Gen 1
  • Board/platform: NM-C931 Rev 1.0
  • Files included: Main BIOS, EC firmware, schematic PDF, PDF/TVW boardview and board photos
  • Firmware details: Main BIOS plus 288KB EC image
  • Verification: Confirm NM-C931 and board revision before programming
Always back up the original chip and verify the exact board code and flash size before programming.

GT4A0/GT5A1/GP4A0/GP5A1/GT4A2 NM-C931 REV 1.0 BIOS
ThinkPad P14s - NM-C931 BoardView PDF.pdf
ThinkPad P14s - NM-C931 SCH.pdf
EC Bios 288kb
LENOVO THINKPAD T14 LCFC NM-C931 HD photoS
BOARDVIEW.TVW
 
About this board

Files for the Lenovo P14s/P15s/T14/T15 Gen 1 motherboard, board number NM-C931.

Lenovo had this board built by LCFC; LCFC (Lenovo/Compal) board numbers start with NM-. Check the number printed on the PCB before you download.

What this thread covers
  • BIOS (full SPI chip dump, .bin)
  • Boardview (.brd / .bdv / .cad)

Usually needed when the laptop powers on with a black screen after a BIOS update, is stuck in a boot loop, or is locked with a BIOS password.

Before flashing, always read and save the original chip. It holds the serial number, UUID, MAC address and ME data for that exact machine.

If you have a working file for this board, please share it below. More files: search NM-C931 in File Finder.

Attachments

EC.bin.zip
141 KB · Views: 77


ThinkPad P14s - NM-C931 SCH.pdf
3.9 MB · Views: 129

NM-C931 BIOS.rar
10.8 MB · Views: 99

ec bios 288kb.bin
288 KB · Views: 52


NM-C931.TVW BOARDVIEW.rar
1.3 MB · Views: 73

Last edited by a moderator:
ThinkPad T14 Gen 1 NM-C931 BIOS BIN
CLEAN ME BIOS 32MB
SRGKY (Intel Core i5-10210U)
BIOS VERSION N2XET40W
TESTED MAC COMPUTER
....................................................................

ThinkPad T14 Gen 1 NM-C931 BIOS BIN
CLEAN ME BIOS 32MB
SRGKX (Intel Core i5-10310U)
BIOS VERSION N2XET42W
TESTED IMRANROMI
 

Attachments



Last edited by a moderator:
I have a Lenovo T15 device with a defective built-in RAM. I want to disable it through the BIOS, but I think its original BIOS has been changed and a different file has been programmed for it.
 

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