Hi,
You can try the following methods
Method 1:
Try to launch the game in administrator mode.
Right-click on the file and then click ‘Run as administrator’
Method 2:
Put the computer in ‘Clean boot’ and check the status.
http://support.microsoft.com/kb/929135
Note: When the troubleshooting is over do not forget to reset the computer to normal startup. Follow step 7 in the above article.
Method 3:
Try to uninstall and reinstall the game.
How to uninstall or change a program
http://windows.microsoft.com/en-US/windows7/Uninstall-or-change-a-program