BIOS for the Acer Aspire 5745 on motherboard DAZR7MB16C0, HM55 chipset, UMA version with integrated graphics only, packed in a 1.71 MB RAR. The DA...MB numbering follows Quanta's scheme, as Quanta built this board for Acer. The UMA tag matters, because discrete-GPU versions need different firmware. Program the SPI chip with an external programmer after backing up the original, and check that the board number and video configuration match 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 →