Sometimes things just go bad. Shit happens, I like to say. I had a friend that had BOTH of his IDE controllers go bad. Within two days of each other, too. Talk about bad luck. Your best bet is to try another CD. If that doesn't work, you'll need to purchase a new motherboard. If you're not comfortable with doing that, consult a local PC repair guy, or go to your local computer store. They'll be more than happy to help you out.
edit: To answer your question... ESD (electrostatic discharge) can mess up your controller, age and regular wear and tear can deteriote it to a non-working state.
Last edited by Robert Diggs; 01-04-2007 at 02:40 PM.