https://youtu.be/watch?v=EKzqMIC8nUI - to remove top cover and https://youtu.be/watch?v=M-ynZ5m1bR4 to remove drive. The optical disc bay is removed by taking out the small screw on the bottom ( the one he didn't instruct to remove. ) You may have already fixed this, but this is the top result on Google and others may use it.