1605 Views 1 Reply Latest reply: Feb 7, 2011 9:54 AM by Király
If this is happening with all CDs and DVDs then it sounds like your optical drive is faulty. You'll have to get it looked at by an Apple repair shop.
Or just get an external optical drive and use that. They are cheap. I often borrow CDs and DVDs from the library and they have stickers all over them that throw the balance off and/or rub against the inside of the iMac's optical drive. If they work at all they make an awful helicopter noise. But they play fine in my external USB optical drive.