Schematic package in PDF form for the MSI MS-7782 motherboard, compressed in a 1.10 MB RAR. The MS-xxxx code is MSI's own board number, printed on the PCB near the slots. Use the diagrams to follow VRM and standby rails, check power sequencing and look up component values for a dead or no-POST desktop board. Open the extracted PDF in any reader. Check that the PCB revision matches the schematic version, because component placement can change between revisions.
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.
7-ZipWinRARThe Unarchiver (macOS)