RAR archive for the MSI MS-1451 motherboard, revision 1.2, about 549 KB. The name does not list the contents, which for such packages are usually schematics and sometimes a boardview. MSI uses MS-1xxx numbers for its notebook boards, so this belongs to an MSI laptop, and the code is printed on the PCB. Extract with WinRAR or 7-Zip, then use the material to trace power rails, locate components and diagnose shorts. Check that the board revision matches 1.2, because layouts differ 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 @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.