BIOS for a Lenovo desktop on the M3A780M board, version 1.0, in the 2M variant implied by the name, supplied as a 1019 KB RAR. The 2M tag most likely marks an image for a 2 MB (16-megabit) flash chip, and a separate 1M version exists, so choose by the chip actually fitted. Written with an SPI programmer, it restores a board that no longer posts. Read the chip label, save its existing contents, and make sure the dump size matches the chip exactly.
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 @afsbiosfree. 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 →