As per my explore in the Internet it causes because of viruses. When I tried to uninstall this VO Package and end up with  this warning This program is blocked by group policy. I used the  software Revo  uninstaller, it could not finish the job of uninstallation but let me to clean the files and registry entries. That’s good.

http://www.revouninstaller.com/revo_uninstaller_free_download.html

After that I used malwarebyte – http://www.malwarebytes.org/ to clean the computer and got Windows 7 is free from viruses.