I was trying to say that he must try to get the system restored by "System Restore" to the time when the computer didn't have the problem. If that solves the problem then scan the computer with a Anti - Virus. Just to make sure that the computer don't have any hibernating viruses.
But before he does this she can also try to reinstall the Driver of the Cd-rom. I think he can access it by the control panel.
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