Dell Vostro 470 desktop BIOS archive for the DH77M01 motherboard, with 0NW73C given as the Dell board part number, 2.87 MB as RAR. The DH77M01 name suggests an Intel H77 chipset board, and the part number is printed on the board label, so compare it before flashing. Use the dump to reprogram the SPI chip with an external programmer when the system shows no display or fails after an update. Back up the original chip first to keep the service tag, and confirm the image fits the chip.
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.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 8 Jul 2019 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 29 Oct 2019 | Open file on RM Schematics |
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 →