Boardview for Wistron motherboard 07211-3, packed in a RAR archive of about 206 KB. The name gives no laptop model or file format, so check the extracted file extension before choosing a viewer. Wistron uses this five-digit plus dash board numbering. Programs such as OpenBoardView or FlexBV open common boardview formats and show part locations, nets and test points, which helps when tracing a short or a missing rail. Make sure the dash revision on the PCB matches, since layouts can differ between versions.
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 @schematicslaptop. 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.