STEP 21

Remove two screws from a plastic cover that secures the power and USB board cables.
Lift up and remove the cover.
Unplug the power cable from the motherboard.

STEP 22

Open two connectors show with red arrows.
Pull the USB board flat cable and the sound board flat cable.
Remove two screws securing the motherboard to the notebook base.

STEP 23

Start lifting up one side of the motherboard as it shown on the photo.
Do not remove the motherboard yet, there are still some cables connected to the other side.

STEP 24

Turn the motherboard over. There would be a tape covering some connectors. Remove the tape.

STEP 25

Unplug all cables that marked with a red arrow.
Even though all cables have differently sized connectors, I would recommend to draw a simple diagram (where each cable goes) so you are not confused when you assembled it back.
When all cables are unplugged, you can remove the motherboard and put it on your bench.

STEP 26

Finally, unlock the CPU socket by turning the screw into "open" position and lift up the CPU. Make sure that you lock the socket when you assemble it back. Also do not forget to apply a thin layer of thermal grease on the CPU surface before you install the heatsink.
If you forget to lock the CPU socket, the laptop will not boot up after you assemble it back.
If you forget to apply new thermal grease, the laptop will overheat and shut down.