windows 7 not genuine fix and enjoy error free windows 7

1. Click on start menu.
2.Type cmd in search field.
3.Right click on cmd file and click on Run
as Administrator .It is must to run
command prompt with administrator
privileges.
4. Type SLMGR -REARM (SLMGR is
Windows software licensing management
tool. REARM command will reset the
licensing status of machine) and press
enter.
5. Now you will see a confirmation
window, click on OK.
6. Restart your PC.
Now you will never receive error message.
If you see same error message, then try
SLMGR /REARM instead SLMGR -REARM.
Command SLMGR -REARM works for
Windows 32 bit version. It even work for
windows 64 bit version. Some times this
command will not work for Windows 64
bit version. Then only try SLMGR /REARM
instead SLMGR -REARM.
After following above procedure, you may
remove windows not genuine error. But
there is chance that you may have black
background. In that case, change the
background by going in to system
properties. You can also re install OS and
follow procedure.