I just got the E73 error messege today after school and i dont know what the error is. I called Xbox Customer Support and they said it would cost $99 to fix it. i know this is basically the same thing as the guy's post who posted his problem with the E74 error but i figured this would be a quicker way to get the help i need. and i think it would be simpler to buy an arcade and sell the one i have now with some extras. But i really want to know what the error is first of all.