Firmware archive for the HP Compaq Pro 4300 small form factor PC, board MS-7782 version 1.0, a design made by MSI under its MS-xxxx numbering. The RAR is about 3 MB compressed. Unpack it and check whether the image inside matches the full capacity of the board's flash chip before programming. Such dumps restore a corrupted BIOS via an external SPI programmer. Keep a backup of the existing chip and confirm the board version on the PCB first.
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 →