Windows 7 OEM Upgrade

[Scib]

This is prob a silly question but I currently have Windows 7 Professional 64Bit installed on my computer. If I were to buy a fresh copy of Windows 7 Ultimate would that free up the Windows 7 Professional Serial?

Best Regards
Scott

 

[Emerald]

It will only free it up if it is a retail version. OEM versions are tied to the motherboard that they are first installed on.