I have a 15" unibody Macbook pro The last time I used my cd drive was a couple months ago to burn a cd. The cd didn't come out so I followed the steps to eject it and it came out properly. Since then I haven't used the drive until recently. When I went to enter a cd to burn some songs onto it, the drive wouldn't accept any discs. As if there was something in there but there is nothing. Can someone be so kind to please help with some steps to get my cd/dvd drive to accept discs again please?? Very much appreciated on your guy's help.