A friend of mine cleaned some of his computer with this computer part cleaner spray stuff. Not realy sure what its called but he used it inside his cd and dvd drives and now they do not work. I think it may have gotten the lense dirty or something to that effect so any advice on fixing it would be appreciated. ie. What to clean them with, or if something else may be wrong with the drives. The Drives won't even read cleaner cds so i can't use those to clean it with.