BIOS for the ASRock G31M-VS3 motherboard, revision 2, stated for a Winbond W25Q80BV flash chip, in a 764 KB RAR. The W25Q80BV is an 8 Mbit (1 MB) SPI flash, so the image should be that size. It is written with a programmer such as a CH341A to fix a board that no longer posts. Check that the chip on the board is the W25Q80BV or a compatible 1 MB part, confirm rev. 2 on the PCB, and back up the original 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 →