BIOS dump from an HP Pavilion dv4-1220us laptop built on Compal motherboard LA-4111P, revision 1.0, in an 816 KB RAR. LA-xxxxP is the Compal numbering format, and this board also turns up in Compaq CQ40 AMD machines. Technicians write such an image to the SPI chip with a programmer when the unit powers on without display due to bad firmware. Check that the PCB reads LA-4111P rev 1.0, keep a backup of the original chip, and verify the 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 @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 →