Boardview for the MSI MS-17F31 notebook mainboard, packed in a 945 KB ZIP and identified in the name as a BDV file. MS-xxxxx numbers are MSI's own board codes, and the last digit usually marks a PCB revision. A boardview viewer such as OpenBoardView or FlexBV maps every part, net and test point, so you can find a component on the physical board and check where a shorted rail goes. Open it alongside the matching schematic where available. Confirm the MS-17F31 marking on your PCB before following nets.
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 @cynetitsolution. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.