Working BIOS dump for the LC55-15C platform, Wistron board 19792-3, sized for a 16 MB flash chip and packed into an 8.32 MB RAR archive. The name does not state the laptop brand. Wistron numbers its boards in a five-digit pattern with a variant suffix, and the suffix matters because -1 and -3 boards can differ. Program the image into the SPI chip with a hardware programmer, checking that the chip really is 16 MB and saving its original contents before you erase anything.
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 →