Small ZIP of 511 KB named only by the Wistron board number 11980-1, with no model, brand or revision in the name. Wistron applies this five-digit dash numbering to laptop boards built for brands such as Dell, Acer and others. Because the archive is compact, it may contain a boardview or a short document rather than a full schematic set, so inspect the contents first. Confirm that 11980-1 appears on the PCB, then use the data to locate components and test points and to follow suspect rails.
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 @ITHINKHS. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.