HP · laptop motherboard

HP NX9420 LA-2821P

SchematicBIOS
Board code
LA-2821P
Made by
Compal
Revisions
Rev 1B
Files
2
Updated

HP NX9420 LA-2821P is a laptop motherboard designed by Compal and used in the HP NX9420 and HP NW9440.

The catalog has 1 schematic and 1 BIOS file for it, posted in 2022 across 3 Telegram channels. Each download button opens the original Telegram post.

The files are marked Rev 1B; 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

  • HP NX9420
  • HP NW9440

Files for HP NX9420 LA-2821P

Schematics 1 All schematics →

BIOS and firmware 1 All bios and firmware →

Frequently asked questions

Which laptops use the LA-2821P motherboard?
File names in the catalog tie LA-2821P to the HP NX9420 and HP NW9440. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of LA-2821P do I have?
Files for this board mention Rev 1B. 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-2821P 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