When Upgrading from Windows 7 Home Premium to Professional...

Discussion in 'Windows 7 Installation' started by 2hand, Oct 28, 2009.

  1. 2hand

    2hand New Member

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    Here is my case. I've performed a upgrade to Windows 7 Home Premium couple days ago, and bought another upgrade to Professional yesterday. After I installed Professional via "Windows Anytime Upgrade", I change the product key to the "NEW" professional product key.

    Question is Would I still be able to use the "Old" product key (Home Premium) to upgrade another computer?

    or did I just waste that Home Premium Product Key (since I don't need 2 version of Windows 7 running on one computer)

    Thanks
     

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