For MSI motherboard MS-7040, a 3.46 MB RAR archive whose name gives no revision or content details. MSI uses MS-7xxx numbers for its desktop boards, so check that the PCB code and revision match before using the files. The size leaves room for a schematic, BIOS files or both. Schematics help trace power rails, locate test points and isolate shorts, and open in a PDF viewer. Any firmware should be written with a programmer only after backing up the original chip contents.
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 @IT_SERVICE_WORLD. 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.