After removing Mac Bootcamp in Windows 7, when you try to reinstall, "Windows key is already in use.

I used to run Windows 7 on a Mac with Bootcamp. later, I removed the bootcamp on my mac and reinstalled Windows 7 on a PC. When I try to enter the Windows key, I received a message that the key is already in use! Any suggestions?

Thank you.

Have you tried to restart by phone?

How to activate Windows 7 manually (activate by phone)
 
1) click Start and in the search for box type: slui.exe 4
 
(2) press the ENTER"" key.
 
(3) select your "country" in the list.
 
(4) choose the option "activate phone".
 
(5) stay on the phone (do not select/press all options) and wait for a person to help you with the activation.
 
(6) explain your problem clearly to the support person.
 
http://support.Microsoft.com/kb/950929/en-us

Tags: Windows

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