Lenovo boardview for the Thor-P Gen2 platform, LCFC board NM-D552, in a 3.33 MB rar archive. Thor-P Gen2 is the internal project name given in the file name, and NM-xxxx numbers belong to LCFC, Lenovo's own laptop manufacturing arm. No revision is stated, so compare the revision printed on your PCB before trusting component placement. Open the extracted layout in FlexBV, OpenBoardView or a similar viewer to find parts by reference, measure diode values on test points and follow signal or power nets.
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 @BoardSchematic. 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.