How to Fix [The Copy of Windows is not Genuine]

 Facing Problem like this (given Image) [The copy of Windows is not Genuine] Nothing to worry about it just follow simple steps -:

     Step 1 -: Goto Start

  Step 3 -: Open CMD 

                 Run as Administrator (Important)

    Step 4 -: Write command
                     "slmgr -rearm" 

                   (Without Quatation Mark)
                   Restart PC its Done ;)