ASUS K42JA BIOS image for mainboard revision 2.0, supplied as a 1.75 MB RAR archive. The name indicates a 4MB flash image and carries an OK OK mark, which uploaders typically use to say the dump was tested as working. Use it to reprogram the SPI BIOS chip with an external programmer when the laptop shows no display or loops at power on. Compare the revision printed on the board with 2.0, dump the original chip for safekeeping, and check that the target chip really is 4MB 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 →