BIOS for an HP all-in-one PC with an AMD platform, built on Quanta board DAN91CMB6D0 revision D, marked OK and sized for an 8MB flash chip. Quanta, the ODM behind this board, uses the DA-prefixed numbering with MB suffix. The RAR file is used to reflash the SPI chip with an external programmer when the AIO powers on but shows nothing. Verify the board number and revision D on the PCB, back up the original chip because it may contain unit-specific data, and confirm the image fits 8MB.
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 →