you have to remove the side panel by getting a screwdriver and unscrewing the screws holding it down then get at the back of the computer and pull the panel toward you then remove the front panel(kinda tricky you gotta find the little clamps that hold it to the frame and push up with a screwdriver on all of them except the bottom row they go down) them remove the cables that are connected then finally remove the 2 screws that hold the DVD drive to the bay then push it towards the front of the computer and do the reverse to put a new drive in or whatever your doing ^_^