Acer BIOS dump for the C20-720, an 8.00 MB raw BIN image, and the name notes a no display condition. It is unclear whether this was read from a faulty unit or meant as a fix, so treat it with caution and compare with another source. The 8 MB size suits a 64 Mbit SPI flash chip. Before writing with a programmer, save the existing chip contents, confirm the chip capacity matches and verify after programming. Use only on the exact board it was taken from.
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 @zinfoservicebios. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →