Opening volume of a three-part Windows 7 archive, distributed as a 1.42 GB self-extracting RAR executable; the name gives no edition, language or 32/64-bit detail. It rebuilds the image only when part2 and part3 are in the same directory. Older machines, industrial PCs and boards lacking Windows 10 drivers often still need Windows 7 for diagnostics. Since the source is unofficial, scan the executable first and check that a genuine product key is available for the installation.
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 @laptopschematics. Enginerys does not host this file.