Clean the lens with a dvd/cd lens cleaner (walmart, radio shack, etc.). or if you're feeling adventurous, remove the top, remove the dvd shuttle cover, and clean the lens with a q-tip dipped in rubbing alcohol. wip it off gently ad blow it dry with your mouth (as opposed to a hair dryer). the alcohol will evaporate. put it together and try it out. if it still doesn't read, you may need to replace the optical pickup (lens and motor).
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Clean the lens with a dvd/cd lens cleaner (walmart, radio shack, etc.). or if you're feeling adventurous, remove the top, remove the dvd shuttle cover, and clean the lens with a q-tip dipped in rubbing alcohol. wip it off gently ad blow it dry with your mouth (as opposed to a hair dryer). the alcohol will evaporate. put it together and try it out. if it still doesn't read, you may need to replace the optical pickup (lens and motor).