Another X750J archive, packed as ZIP but larger at 3.28 MB, so it probably holds different or extra material compared with the 2.96 MB copy. Neither the brand nor the board revision appears in the name, and the contents are unlisted. Unpack it and compare it with the other set to choose the version that matches your board. Whether it is a schematic, boardview or BIOS, check the motherboard revision printed near the CPU or memory slots before relying on it for diagnosis.
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 @schematiclaptopramkushwaha. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.