Zip archive of about 3.2 MB for the Acer Aspire ES1-431 laptop. The name identifies only the model, without a board number, revision or content description, so extract it to see whether it contains a BIOS dump, schematic or boardview. Firmware images are written to the SPI flash chip with a programmer, while schematics and boardviews are used to trace power rails and locate components. Make sure the board number printed on your PCB matches any documentation and back up the original firmware first.
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 @laptopbios21. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.