Boardview data for the Lenovo E40 on the Quanta GC5 board, part number DAGC5AMB8F0, packed in a 1.06 MB RAR archive. Quanta part numbers start with DA, then the project code (here GC5), and the trailing characters show the board revision. A boardview is opened in a viewer such as OpenBoardView or FlexBV and lets a technician find components, pins and test points and follow nets across the board while measuring. Confirm that the full DA number on your PCB matches.
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 @alischematics. 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)