Controll panel application error

Hello,

when i tried to open controll panel it gives me error saying APPLICATION NOT FOUND
so i tried following but no help. kindl plz help

1. Right click on "internet explorer" icon on your desktop.
2. Click on "properties" located at most bottom.
3. Click on "Programs"
4. Click on "Make default" and also click on small box "tell me...."
5. Click on "Apply" at the bottom of window
6. Click on "OK"