HP · laptop motherboard

HP Presario CQ40 LA-4111P

SchematicBIOS
Board code
LA-4111P
Platform
JBL20
Made by
Compal
Revisions
Rev 0.4, Rev 1.0
Files
7
Updated

HP Presario CQ40 LA-4111P is a laptop motherboard designed by Compal and used in the HP Presario CQ40 and HP Pavilion DV4.

The catalog has 2 schematics and 5 BIOS files for it, posted between 2017 and 2022 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 JBL20.

Compatible models

Files for HP Presario CQ40 LA-4111P

Schematics 2 All schematics →

BIOS and firmware 5 All bios and firmware →

Frequently asked questions

Which laptops use the LA-4111P motherboard?
File names in the catalog tie LA-4111P to the HP Presario CQ40 and HP Pavilion DV4. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of LA-4111P 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 LA-4111P 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