RAR archive for Compal board LA-B171P revision 1.0, project code ZPM30; no laptop brand or model is stated in the name. At 3.94 MB it likely holds repair documentation such as a schematic or boardview, but the contents are not listed, so extract it with WinRAR or 7-Zip and inspect the files. Compal uses LA-xxxxP numbers on boards built for several brands, so match the code and revision on your PCB before relying on it to trace rails, find components or locate a short.
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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.