Ask Lenovo ThinkPad T15 Gen 1 NM-C931 – BIOS/CSME rebuild request

Question & Answer Forums
R

roxdeguzman

Membership
Engineer Pass
Hello,

Please help rebuild/repair this original 32 MB BIOS dump.

Model: Lenovo ThinkPad T15 Gen 1
Machine type: 20S60037AU
Motherboard: NM-C931 Rev 1.0
FRU: 5B20Z45913
CPU: Intel Core i5-10210U
Memory: 16 GB onboard RAM
Graphics: Intel UHD/UMA

Fault:

  • One beep when powered on
  • Fan spins briefly and stops
  • Power indicator turns on
  • No display and no POST
  • Fn key cannot replay the SmartBeep code
Work completed:

  • Main battery and CMOS battery disconnected
  • Mainboard fully discharged/reset
  • Two original 32 MB BIOS reads were taken and both matched
  • BIOS region was replaced using a known-good NM-C931 donor, but the fault remained unchanged
Please clean/rebuild the Intel CSME/ME, BIOS and NVRAM while preserving the original serial number, UUID, machine type, Windows key, MAC address and Lenovo-specific information.

Original dump attached.

Thank you.
 

Download list

  • MX25L25633F@WSON8_20260806_100339.BIN
    MX25L25633F@WSON8_20260806_100339.BIN
    32 MB · Views: 2
  • Technical file information BIOS / firmware dump

    Technical download for Lenovo ThinkPad T15 Gen 1. Resource type: BIOS / firmware dump. Motherboard code: NM-C931, REV 1.0. Platform: Intel. Flash chip: MX25L25633F · SPI NOR flash · Macronix (32 MB). Verify the exact model and board revision before programming or repair work.

    Manufacturer
    Lenovo
    Model
    ThinkPad T15 Gen 1
    Motherboard
    NM-C931
    Board revision
    REV 1.0
    Platform
    Intel
    Memory / flash device
    MX25L25633F · SPI NOR flash · Macronix · 32 MB
    File type
    BIN · 32 MB
    SHA-256
    89b28ac59e1247185427949e249f3a194e74a87b47066aa6f4f0db1ba6176e1e
    Download access
    Paid membership required
    Related Downloads
    1. BIOS Lenovo G450.rar BIOS · Lenovo · G450.
    2. V14-ADA, V15-ADA, ideapad 3-14ADA05, ideapad 3-15ADA05, ideapad 3-17ADA05_NM-D151 E8CN21WW.bin.zip BIOS · Lenovo · V14-ADA · Motherboard NM-C821 · Schematic available.
    3. MFCN32WW AMD.zip BIOS · Lenovo · MFCN32WW · AMD.
    4. GD25LQ128@WSON8 8X6_20260803_171115.BIN BIOS · Lenovo · Motherboard NM-E541.
    5. Legion 7 16IAX10 NM-G841 RXCN79WW.bin BIOS · Lenovo · 16IAX10 · Motherboard NM-G841.
    Community verification No verified downloader ratings yet.
Upvote 0 Downvote
roxdeguzman said:
Hello,

Please help rebuild/repair this original 32 MB BIOS dump.

Model: Lenovo ThinkPad T15 Gen 1
Machine type: 20S60037AU
Motherboard: NM-C931 Rev 1.0
FRU: 5B20Z45913
CPU: Intel Core i5-10210U
Memory: 16 GB onboard RAM
Graphics: Intel UHD/UMA

Fault:

  • One beep when powered on
  • Fan spins briefly and stops
  • Power indicator turns on
  • No display and no POST
  • Fn key cannot replay the SmartBeep code
Work completed:

  • Main battery and CMOS battery disconnected
  • Mainboard fully discharged/reset
  • Two original 32 MB BIOS reads were taken and both matched
  • BIOS region was replaced using a known-good NM-C931 donor, but the fault remained unchanged
Please clean/rebuild the Intel CSME/ME, BIOS and NVRAM while preserving the original serial number, UUID, machine type, Windows key, MAC address and Lenovo-specific information.

Original dump attached.

Thank you.
Click to expand...
POST SNID
 

Similar threads

Technical Search
BIOS • Schematics
→
☕ NEW • PAY IN VND

1 Ly Cà Phê

49k / Ngày

Bỏ một ly cà phê hôm nay.
Ngày mai sửa thêm một chiếc laptop ☕

Mở khóa ngay

Latest posts

Back
Top