1. Follow the instructions in "Before Working Inside Your Computer."
2. Remove the keyboard.
3. Disconnect the display ground wire from the EMI shield by unscrewing the captive screw.
4. Remove the four M2.5 x 5-mm screws (labeled "M2.5x5") that secure the EMI shield to the system board, and pull the EMI shield out of the computer
base.
5. Remove the cooling fan.
6. Loosen in consecutive order the four captive screws, labeled "1" through "4," that secure the microprocessor thermal-cooling assembly to the system
board.
1
captive screw
2
display ground wire
1
M2.5 x 5-mm screws (4)