Activating Windows 7 With a Product Key. To activate Windows 7 with a product key you just need to: Click the Start Button; Right-click on Computer and choose Properties; Click the Activate Windows online now button located at the bottom of the system properties window; Type in your product key. Click Next to activate your Windows copy.
Very much for you quick reply.But to get more clear if you don't mind please tell me if I have updated windows 10 then I format(wipe out entire C: drive) the hard disk, should I have to reinstall fresh copy of windows 7 with valid product key to upgrade it to Windows 10? Or instead of that, Since I 've already updated to win 10, Can I undoubtedly format the hard drive and only install fresh copy of win10 then activate with previous win 7 product key?
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