Quanta ZYW motherboard files at revision 3A, contained in a 1.41 MB RAR archive. The laptop brand and model are not given, so match the board using the ZYW code and revision printed on the PCB, since earlier revisions may differ. Quanta designs and produces boards for several notebook brands. The archive likely includes a schematic or boardview used to trace power rails, measure test points, locate components and narrow down shorts on the main supply lines.
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 @IT_SERVICE_WORLD. 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.
7-ZipWinRARThe Unarchiver (macOS)