Have you log on your computer and ” This copy of windows is not genuine” pops up?, here is a easy fix which will take under 2 mins
Follow these steps
1. Start the start menu and search “cmd” (open it as admin)
2. Type “SLMGR -REARM” (without the quotation) in the text box and click enter
3. A window will pop up click ok
4. Restart your computer and it should be fixed!