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#11
Yes, absolutely. 1. Great that you created a backup before moving to Windows 10! 2. Make sure the Windows 10 that you upgrade to is fully activated before you clean install over it. From an elevated command prompt ("Run as Administrator" command prompt) type slmgr /dlv . Look in the information returned for an expiration date. You should not find one. Then type slmgr /exp . That should return that your machine is permanently activated. If you get those two results, you are supposed to be good to go to do a clean install of the same version of Windows 10 and "skip" or "do this later" when it asks you to enter a product key.