How to fix This Copy of Windows is not genuine on Windows 7, if you are getting error Windows 7 build 7600 / 7601 This copy of windows is not genuine, then you can fix it
This is 100% working method to fix this error.
This is because either you are not running genuine copy of Windows or your license got expired, there is also chance that a windows update can cause this problem, in all these three cases you gets error at the computer start-up that Windows is not genuine, and also computer background changed to black screen.
Read here- http://sh.st/xj7l7
Video Url- http://youtu.be/HY9TA3RdEWQ