MSI MS-6704 archive, 3.46 MB, supplied as a zip. Only the brand and MSI internal project number are given, with no revision or description of the files. Extract it and check whether it contains schematics, which help trace power rails and diagnose shorts, or firmware, which is written to the BIOS chip with a programmer. Since MSI used MS- codes across several board revisions, verify the version printed on the PCB, and save the original chip contents before any reflash.
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 .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip