Quanta W08 project archive at revision A2, 872 KB in RAR format. The name gives no laptop or tablet model, brand or DA board number, so determine the device from the extracted files. Expect a schematic and possibly boardview data, used to trace power rails, check sequencing and locate components and test points. Because this is revision A2 rather than a 1A release, confirm that the revision printed on your PCB matches before trusting component values.
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)