I have a dvd-rom drive and a cd-rw drive on this computer. Whenever I insert a cd into my dvd-rom drive, it doesnt detect that a cd has been inserted. i can restart with the cd in there, doesnt detect it, put the cd in and out, doesnt detect it, etc. My other drive, the cd-rw one, doesn't open unless there's a cd already in there. i can kind of tilt the computer one way or hit it and press the button at the same time and it'll open, but for the most part i cant get it open. anyone have any ideas/suggestions as to what caused these problems or how to fix them?