In general, Windows is the OS that is licensed and not open source. so for those of you who install windows 7 that you get from downloading on the Internet, of windows 7 is not genuine (pirated).
Usually, the maximum time limit given windows 7 is 1 month or 30 days. but, I will tell you how to activate and make your windows 7 genuine or a Genuine. not only the ultimate version, home premium, but all versions of Windows 7 (all version).
Here's How to Activate Windows 7 All Version Genuine Original Being:
1. please download Windows 7 / 8 Activator Full Version
Download Windows 7 / 8 Activtor Full Version Here
2. please turn off antivirus
3. please go to and click install
4. restart your computer.