I am trying to fix my friends macbook for them because they know nothing about computers. Their cd drive wont hold in any discs, when you put in a disc it takes it in, makes some really weird sounds and spits the disc out after about 5 secs of it making some weird noises. I'm used to PC's so I'm kinda lost. all the drivers seem to be up to date, thats the first thing I did when I started to work on it and it still makes those weird sounds. Does anyone have any suggestions on what might be causing it to spit the cd's out?