Zip archive of 1.21 MB for the MSI MS-7623 motherboard, with BVD in the name that most likely indicates boardview contents. MSI numbers its own desktop boards in the MS-xxxx format, so the number on the PCB identifies the matching file. A boardview shows component placement and nets, helping to locate parts, trace a rail and find shorts. Open it with a viewer such as OpenBoardView, and check the board revision printed near the MS number.
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 @schematicslaptop. 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