If you're looking for a Windows 7 ISO on Internet Archive , it's a common way to find original or modified versions of the OS now that Microsoft has removed official downloads. However, since anyone can upload to Archive.org, you need to be careful about what you download and how you prepare it. 1. Find a Reliable ISO
TechGuy / DibyaFalconFour (FalconFour’s Ultimate Boot CD – but also clean ISOs)theshr3dder (often has untouched MSDN copies)Mallory (verified VL/Retail images)