We all know that everyone can't buy a genuine windows 7, because cost is too high. Lots of Windows 7 users have experienced the error message that "Windows 7 is not genuine". This error message comes if you use pirated or OEM versions of Windows 7. If windows 7 is not genuine, even you can't change the background wallpaper or any other display related option on your PC.

So now I'm going to show you a easy way to make your windows 7 genuine using command prompt.

Process:
1. Click on Start->Run
2. Type cmd and hit Enter. Now command prompt will appear. Note : Run CMD as Administrator
3. In command prompt type SLMGR -REARM and hit Enter.
4. After Wait 5-10 seconds a message will appear.
5. Accept the message (press OK).
6. Restart your PC once. Hereafter you won't see the warning message that "Windows 7 is not genuine"