Dell Vostro 1720 notebook BIOS supplied in a RAR archive of roughly 2 MB; the name gives no motherboard number, revision or version, so check what the archive holds once unpacked. Technicians use such dumps to restore a corrupted flash on laptops that power on without video or refuse to boot. Open it with WinRAR or 7-Zip, compare the image size with the SPI chip fitted on the board, back up the original contents with a programmer, and confirm the board matches before committing the write.
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 →