RAR archive, 1.84 MB, for the MSI-numbered board MS-V388, revision 8.0. The MS-Vxxx pattern is MSI's numbering, typically used for its graphics card PCBs. The name does not list the contents, so extract it with WinRAR or 7-Zip to see whether it holds a schematic, boardview or firmware. Several revisions of this board exist in the index, so check that the revision silkscreened on the PCB is 8.0 before tracing rails or flashing anything, and back up the original chip first.
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 @cyberlanelectonik. 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.