Firmware dump for an HP laptop on Compal mainboard LA-K771P, revision 1.0, labelled BIOS OK. It arrives as a 23.5 MB RAR archive, which suggests a large image or several files, so unpack it and review what is inside. The LA- prefix with a four-character code is Compal's standard board numbering, with the revision marked separately on the PCB. Match both details, read and back up the existing SPI chip using a programmer, and only then flash this image to repair a board that will not boot.
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 @schematiclaptopramkushwaha. 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 →