Lenovo · laptop motherboard

Lenovo G50-75M NM-A291

SchematicBIOS
Board code
NM-A291
Platform
ACLU8
Made by
LCFC
Revisions
Rev 0.1, Rev 1.0
Files
6
Updated

Lenovo G50-75M NM-A291 is a laptop motherboard designed by LCFC and used in the Lenovo G50-75M and Lenovo Z50-75.

The catalog has 1 schematic and 5 BIOS files for it, posted between 2018 and 2024 across 3 Telegram channels. Each download button opens the original Telegram post.

File names mention 2 board revisions (Rev 0.1 and Rev 1.0). Check the revision printed on your PCB before relying on a boardview or flashing a BIOS dump — How to Open .FZ Boardview Files explains why it matters.

The schematic is a PDF; the first pages usually hold the block diagram and the power sequence. New to schematics? Start with How to Use a Schematic and a Boardview Together.

BIOS notes: some archives also hold EC/KBC firmware. Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Also listed under platform ACLU8.

Compatible models

  • Lenovo G50-75M
  • Lenovo Z50-75

Files for Lenovo G50-75M NM-A291

Schematics 1 All schematics →

BIOS and firmware 5 All bios and firmware →

Notes from the source posts

  • Rev: 1.0
  • CPU - AM7100ECH44JA
  • FCH - AMD 218-0844012
  • GPU - AMD 216-0856040
  • KBC - ITE 8586E-FXA
  • BIOS - Winbond W25Q64

Frequently asked questions

Which laptops use the NM-A291 motherboard?
File names in the catalog tie NM-A291 to the Lenovo G50-75M and Lenovo Z50-75. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of NM-A291 do I have?
Files for this board mention Rev 0.1 and Rev 1.0. The revision is printed on the PCB silkscreen, usually next to the board code. Pick files with the same revision when you can; if yours is not listed, the closest revision is usually fine for the schematic but check part positions in the boardview carefully.
What should I check before flashing the NM-A291 BIOS?
Read the original chip with a programmer and save two copies before writing anything. Some archives include EC/KBC firmware, which may need to be written to a separate chip. A dump from another board carries that board's serial number and MAC address, so restore yours from the backup.

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Files are hosted on Telegram by third parties; ExcitingSpas.com only links to public posts. Check that a file matches your board before using it. Disclaimer · Report a file