If you see an error on you screen stating that your version of windows 7 is not genuine or you receive a pop up that you may have a counterfeit version of windows then you can easily fix this by running the command below.
- Open command prompt as Administrator. The easiest way to do this is to type cmd in the start-menu, then right click on cmd and click Run as Administrator.
- In the cmd windows type SLMGR /REARM and press Enter and wait till it executes.
- Click Ok to restart your system.
When you restart your system you will not see the error.