Answer to: If the power button flashes on when depressed, but nothing else...To remove the CPU, take off the heat sink which is held down by 4 screws. Lift the card up with your fingertips from the edge of the card closer to the back of the case. When the card is at about a 45 degree angle relative to the plane of the main logic board it will come out of the black plastic holder. Slide the black plastic holder off of the posts. Disconnect all cables, take out the video card, remove the 1 screw that is holding down the board and take out the board.