I've been out of the loop for a while, but I know that now we can enter windows 7/8 keys at installation and not have to do upgrades. Can this same concept be applied to upgrading from an enterprise version which is not eligible but using the Pro key that came with the device? Basically I have a legit Windows 7 Pro key but I don't want to have to do a clean install. Is there anyway of doing a 7 Enterprise to 10 Pro install and entering the 7 pro key to activate?