Help!! My device driver for my cd/dvd-rom has stopped working. When I go to device manager, there is a yellow exclamation point next to it. It was working perfectly fine a week ago. I have checked for solutions and possible driver updates to no avail. If someone could tell me what I can do to fix this problem, it would be greatly appreciated. Please make sure that it is in a simple, step-by-step format. I'm still learning about computers. Thanks.