Lenovo · laptop motherboard

Lenovo G70-50 NM-A331

SchematicBIOS
Board code
NM-A331
Platform
AILG1
Made by
LCFC
Revisions
Rev 0.4, Rev 1.0
Files
6
Updated

Lenovo G70-50 NM-A331 is a laptop motherboard designed by LCFC and used in the Lenovo G70-50, Lenovo G70 and Lenovo Z70.

The catalog has 2 schematics and 4 BIOS files for it, posted between 2021 and 2024 across 3 Telegram channels. Each download button opens the original Telegram post.

File names mention 2 board revisions (Rev 0.4 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 files are PDFs; 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.

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 AILG1.

Compatible models

  • Lenovo G70-50
  • Lenovo G70
  • Lenovo Z70

Files for Lenovo G70-50 NM-A331

Schematics 2 All schematics →

BIOS and firmware 4 All bios and firmware →

Frequently asked questions

Which laptops use the NM-A331 motherboard?
File names in the catalog tie NM-A331 to the Lenovo G70-50, Lenovo G70 and Lenovo Z70. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of NM-A331 do I have?
Files for this board mention Rev 0.4 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-A331 BIOS?
Read the original chip with a programmer and save two copies before writing anything. 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