It is about 5-6 years old and has been perfect and now all of a sudden it only recognizes CD's, not DVD's. When you insert a DVD, it says No disc. I've looked inside for dust or particles, and clean each DVD I try. I bought it at Sears, and they act like they can't work on it. I don't know where to take it and how big the problem might be...can you help?
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