BIOS image for the HP 15-bw032wm laptop on board CTL51-53 with Compal number LA-E831P, supplied as a 4.27 MB rar archive. LA-prefixed numbers follow the Compal board scheme, the ODM behind many HP models. Technicians program such a dump to the SPI flash with an external programmer when the notebook has no display, fails to boot or has corrupted firmware. Back up the existing chip first, since it may hold serial data, and confirm board number and chip size match.
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.
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 →