I contact Microsoft and they told me that i have to install win XP pro with an old key from another pc and after to contact them by phone in order to activate it with the win 7 pro key. There is no other way of downgrade. This is the stu... thing ever. So a guy like that i build pc, i have to go...
I have windows 7 Pro and i want to downgrade to XP Pro, because some uplications i use don't work ok with 7 even if i run it as compatible to XP.
Any, i know that win 7 Pro can downgrate to XP Pro by using the same key, but i can not figure uot how. i try to install XP Pro using Win 7 key put...