Where I can I legally download Windows 7 installation .ISO files? [duplicate]
Solution 1:
Microsoft Windows 7 Download links answered here
The OEM license should be accepted when installing, but if you do not use OEM media then you will need to call Microsoft's activation hotline to complete the activation process.
Purchaser owns the license, but OEM licenses are not transferable between computers - they must stay on the computer they were sold with.