My father recently passed away, and I have his Optiplex 780. The Proof of License/Certificate of Authenticity on the tower shows the OS to be Windows 7 Pro, and has the Product Key listed. The computer is actually running XP Pro. Is there a way to upgrade to 7 Pro? I'm not sure what he did, but from what I've been able to gather by researching, there was a downgrade from 7 Pro to XP Pro. Can I upgrade to 7 Pro, and if so, how? We are still going through some of his things, but have yet to find any disks. I recently did a clean installation of XP Pro, and had to delete and create a new partition. Any help would be greatly appreciated. I just hate to see the computer gather dust. :/
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