BIOS image for MSI motherboard MS-13D11, with hz750 noted in the name, likely a model or customer code that is not explained further. MSI uses the MS- prefix followed by digits for its own board numbers, and the number is printed on the PCB. The 6.40 MB RAR contains firmware intended for the board's SPI flash chip. Before programming, save the existing chip contents, compare the image size with the chip capacity, and make sure the board number on your PCB matches MS-13D11 exactly.
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 @biosarchive. 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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →