ERROR INDICATING THAT THE KEY CANNOT BE USED... WHAT I DO NOW?

I INSTALLED WINDOWS 7 HOME BASIC, PREVIOUSLY ACTIVATED 2 TIMES, UNFORTUNATELY, I HAVE TO FORMAT THE DRIVE C, BUT THEN WHEN I REINSTALLED THE SAME OPERATING SYSTEM ON THE SAME COMPUTER COULD NOT BE ACTIVATED, INDICATING ERROR THAT THE KEY COULD NOT BE USED... WHAT SHOULD I DO NOW?

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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