Unable to start Antivirus

I have been using Norton Antivirus 2010 for a couple months.   Starting last monday it refuses to start up either automatically on windows start up or manually.   There is no error message.    The only changes that were made were windows auto updates on that same day.  I have since uninstalled those updates with no improvement.    I am assuming there might be some kind of virus that is blocking the program from starting up. 

 

Any advice would be helpful.