BIOS firmware for the Compaq Presario CQ57-229wm notebook, an HP product, in a 1.26 MB ZIP archive. No motherboard number, revision or firmware version appears in the name, so verify the extracted files against your board before use. Such images are used to restore the SPI flash with a programmer when a machine stays on a black screen or fails to post. Read and save the existing chip contents first, compare the board markings with the dump source, and make sure the image size equals the flash chip capacity.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →