Enwindows7ultimatex64dvdiso
Use Rufus to create the bootable media. If the target PC uses UEFI (standard on most computers from the last 10 years), you may need to enable "Legacy Boot" or "CSM" in the BIOS.
If you download from an archive site (like Internet Archive), you must verify the SHA-1 checksum against official Microsoft MSDN values. enwindows7ultimatex64dvdiso
Newer processors (Intel 7th Gen+ or AMD Ryzen) often lack the necessary drivers to run Windows 7 properly. Use Rufus to create the bootable media