i have just deleted the CEAW file from my docs and it starts but if i put it back it no longer starts?

game has worked fine for the last few days. I have gone to start today and blank it dont work. I click on the icon on the desk top and in the start menu and nothing happens and i mean nothing. The hour glass comes up for about 1 sec and then nothing. I have unstalled and reinstalled and it still wil...