: Sourcing original, holographic retail DVDs from trusted secondary marketplaces guarantees an untampered installation source.
When applied to a :
An ISO is simply installation media. Downloading a clean ISO from a parent directory does not grant a free license. You will still need a legitimate, matching retail or OEM product key (printed on the sticker of your old hardware or documentation) to activate the operating system. Post-Install Security Patching parent directory index of windows 7 iso