Working BIOS dump for the HP ProBook 5220m, board DASX1AMB8E0 revision E, taken from chip U29 and packed in a 2 MB RAR archive. DA-prefixed board numbers follow the Quanta pattern, so Quanta built this board. Write the image to the SPI flash at U29 with an external programmer to recover a board that will not post. Back up the original chip first, verify the chip capacity equals the image size and check that the PCB number and revision match before programming.
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 →