Dell · laptop motherboard

Dell XPS 15 LA-7851P

SchematicBIOS
Board code
LA-7851P
Platform
QBL00
Made by
Compal
Files
4
Updated

Dell XPS 15 LA-7851P is a laptop motherboard designed by Compal and used in the Dell XPS 15 and Dell XPS 15Z.

The catalog has 1 schematic and 3 BIOS files for it, posted between 2021 and 2022 across 3 Telegram channels. Each download button opens the original Telegram post.

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.

BIOS notes: some archives also hold EC/KBC firmware. 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 QBL00; codes LA-7852P.

Compatible models

Files for Dell XPS 15 LA-7851P

Schematics 1 All schematics →

BIOS and firmware 3 All bios and firmware →

Frequently asked questions

Which laptops use the LA-7851P motherboard?
File names in the catalog tie LA-7851P to the Dell XPS 15 and Dell XPS 15Z. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
What should I check before flashing the LA-7851P 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