I would recommend checking your CD for cleanliness, scratches or dust on the CD will cause problems. If that doesn't help I would recommend looking at the troubleshooting page or if necessary you can replace the optical drive on the computer, there is also a guide for that as well.
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I would recommend checking your CD for cleanliness, scratches or dust on the CD will cause problems. Next you could try to blow any dust out of the optical drive with a can of compressed air. Then if that doesn't help I would recommend looking at the troubleshooting page or if necessary you can replace the optical drive on the computer, there is also a guide for that as well.
I would recommend checking your CD for cleanliness, scratches or dust on the CD will cause problems. If that doesn't help I would recommend looking at the troubleshooting page or if necessary you can replace the optical drive on the computer, there is also a guide for that as well.