Lenovo · laptop motherboard

Lenovo B50-70 LA-B091P

SchematicBoardviewBIOS
Board code
LA-B091P
Platform
ZIWE1
Made by
Compal
Revisions
Rev 1.0, Rev 2.0, Rev 3.0
Files
26
Updated

Lenovo B50-70 LA-B091P is a laptop motherboard designed by Compal and used in the Lenovo B50-70, Lenovo B50, Lenovo B50-80 and Lenovo B40 and 4 more.

The catalog has 3 schematics, 2 boardview files and 21 BIOS files for it, posted between 2017 and 2026 across 6 Telegram channels. Each download button opens the original Telegram post.

File names mention 3 board revisions (Rev 1.0, Rev 2.0 and Rev 3.0). 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 boardview comes in .BDV format. OpenBoardView (free) usually opens these files; FlexBV works too. See OpenBoardView: Installation and First Steps.

With both a schematic and a boardview you can find a net on the diagram and then locate the same part on the board by its reference designator. No Boardview for Your Board? How to Work Without One shows the workflow.

BIOS notes: some archives also hold EC/KBC firmware; versions with a cleaned ME region are included. 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 ZIWE1.

Compatible models

Files for Lenovo B50-70 LA-B091P

Schematics 3 All schematics →

Boardview files 2 All boardview files →

BIOS and firmware 21 All bios and firmware →

Frequently asked questions

Which laptops use the LA-B091P motherboard?
File names in the catalog tie LA-B091P to the Lenovo B50-70, Lenovo B50, Lenovo B50-80, Lenovo B40, Lenovo B40-70 and Lenovo IdeaPad 305-15IBD. 2 more models are listed above. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of LA-B091P do I have?
Files for this board mention Rev 1.0, Rev 2.0 and Rev 3.0. 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.
How do I open the LA-B091P boardview file?
The boardview for LA-B091P is available as .BDV. .BDV usually opens in OpenBoardView (free) or FlexBV. See What Is a Boardview File and Why You Need One.
What should I check before flashing the LA-B091P 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.

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