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.
1captive screw
2display ground wire
4.Remove the four M2.5 x
1 M2.5 x
5.Remove the cooling fan.
6.Loosen in consecutive order the four captive screws, labeled "1" through "4," that secure the microprocessor