Quote (Ghot @ Oct 8 2017 06:48pm)
As long as your key matches the version of Windows on a disc you borrow...it will work with no problems.
/e Like a Win 7 Pro x64 key will only work on Win 7 Pro x64 etc.
Not necessarily. An upgrade key for 7 (regardless if it's Pro/Home/Ultimate/etc) won't work on OEM/RTM media.