Working BIOS for an HP all-in-one PC with motherboard DA0N91MB6D0 at revision D, a code in Quanta's DA0 numbering pattern. Quanta designs many HP consumer systems, and the DA0 board code and revision are printed on the PCB. Use the dump to restore the SPI flash with an external programmer when the unit stays on a black screen. The archive is about 16.5 MB, so check which image matches the chip, back up the original, and confirm the capacity 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 →