Windows 8.1 genuine key refused to work ??

[Brock lessner]

I dunno why it's happening but I a legit copy of Windows 8.1 and now it's refusing the key ? yesterday I was reinstalled my Windows 8.1 to 7 . and now Windows 8.1 block my key without any reason ?? the error message says enter a new key ?

[Livy]

http://answers.microsoft.com/

[Brock lessner]

http://answers.microsoft.com/

thanks , will ask on that too . still , if someone of you know the solution please mention their .

[markyrocks69]

http://answers.microsoft.com/en-us/windo...dc6b9b9f21

[Serial Hacker]

some keys are region locked ?

[Brock lessner]

well , I'm back to my Windows 7 for now . I was asking for support let see what they will answer.