Really weird problem with upgrding to Premium

so i have this problem with upgrading to Windows 7 home premium. According to my computer (except for my desktop which says "Windows 7 Evaluation copy, Build 7100" ) I am running Windows 7 Ultimate. My basic Google search showed nothing big so can I pleas have some help?


Excellent Member
Microsoft Community Contributor
I am not sure where exactly your problem is. You say you are running the RC (7100), which is an Ultimate edition. You can not do an in place upgrade from the RC to the RTM, or from an Ultimate Version to a Home Premium version.

Do you have a retail version of the RTM you are trying to upgrade to?

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