My Windows 7 install has been bugging me to activate it recently so I decided to fix it. I “lost” my beta key Microsoft gave me when I downloaded the .ISO so I had to look for other means to activate windows.
The first couple patches I tried didn’t work with my 7057 build, but I finally happened across one on btjunkie. It’s called the Windows 7 All version PlusPatch 1.0.1. Give it a shot, it worked perfect for me.