Since you cannot get it directly from the standard Microsoft software download page anymore, these are the most reputable alternatives:
These ISOs do not contain any updates (Service Pack 1 might be missing or outdated). You will have to download 6+ months of Windows Updates after install. windows 7 64-bit iso file download
: Given that Windows 7 is no longer supported, consider using a modern operating system like Windows 10 or Linux distributions for better security. Since you cannot get it directly from the
Regardless of where you download, verify the file hash. A legitimate Windows 7 64-bit ISO (with SP1) will have a specific SHA-1 value. windows 7 64-bit iso file download