Lenovo · laptop motherboard

Lenovo S3-S440 LA-9761P

SchematicBIOS
Board code
LA-9761P
Made by
Compal
Revisions
Rev 0.1
Files
2
Updated

Lenovo S3-S440 LA-9761P is a laptop motherboard designed by Compal and used in the Lenovo S3-S440, Lenovo ThinkPad S3 and Lenovo ThinkPad S440.

The catalog has 1 schematic and 1 BIOS file for it, posted between 2019 and 2021 across 3 Telegram channels. Each download button opens the original Telegram post.

The files are marked Rev 0.1; other revisions of the same board can differ in parts and layout.

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.

Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Compatible models

Files for Lenovo S3-S440 LA-9761P

Schematics 1 All schematics →

BIOS and firmware 1 All bios and firmware →

Frequently asked questions

Which laptops use the LA-9761P motherboard?
File names in the catalog tie LA-9761P to the Lenovo S3-S440, Lenovo ThinkPad S3 and Lenovo ThinkPad S440. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of LA-9761P do I have?
Files for this board mention Rev 0.1. 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 LA-9761P 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.

Guides for this board

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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