Laptop BIOS archive for Compal board LA-7871P, project code QAL31, with 50 and 51 in the name, probably model variants sharing this mainboard. Compal uses the LA-xxxxP numbering and prints the project code beside it on the PCB. The 2.83 MB RAR is meant for reflashing the SPI BIOS chip with a hardware programmer to recover a board with no display or a boot loop. Verify that your board number and revision match, keep a copy of the original chip contents, and confirm the image size before writing.
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 @afsbiosfree. Enginerys does not host this file.
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 →