Hi there. Still own a Win 8 Pro upgrade disk, which is not being used. I've got a good running Vista PC, and would like to upgrade it with Win 8 Pro (maybe also with the idea of eventually running Win 10). Let's say I activate Win 8 Pro and weeks later, I find out that it isn't performing. Can I go back to Vista and still have the Win 8 Pro available for another PC?
- XP, Vista, Windows 7, Windows 8/ 8.1, Windows 10