LA-7841P – Dell XPS L421X
The LA-7841P (Compal) motherboard is found in the Dell XPS L421X. ChambersDesignInc.com has indexed 2 files for this board — 1 BIOS file and 1 schematic.
First posted in August 2021 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 1
Schematics 1
Board facts
| Board number | LA-7841P |
|---|---|
| Designed by | Compal |
| Platform group | LA-7 |
| First seen | 2021-08-29 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-7841P
- Dell XPS L421X
What these files are for
A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.
A schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .rar | RAR archive | 7-Zip or WinRAR |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Who designed the LA-7841P board?
LA-7841P is a Compal board number used by Dell.
Is there a boardview for LA-7841P?
No boardview has been indexed for LA-7841P yet; the schematic is available on this page.
Which laptops use the LA-7841P board?
Files in the catalog link LA-7841P to the Dell XPS L421X.
Where do the download links go?
Each button opens the original public Telegram post the file was shared in. ChambersDesignInc.com only indexes and cross-references those posts.