BIOS dump for HP Compaq Presario CQ40 laptops built on the JAL50 platform, Compal board LA-4101P revision 1.0. This compact 760 KB RAR is meant for reflashing the SPI BIOS chip with an external programmer to recover from a no-boot or blank-screen fault. LA- numbers belong to Compal, and the project code JAL50 appears alongside it on the PCB, so check both plus the revision before writing. Always read and archive the original flash contents prior to erasing.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 22 Dec 2018 | Open file on RM Schematics |
| @jdbios_world | 27 Jun 2019 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →