Using the PH0 screw driver, remove the 7.5 mm screws by turning in a counter-clockwise direction. There are 6 screws on the front panel.

Remove all of the 7.5 mm screws, by repeating the same step above. It is not necessary to remove the stand-leg.

After unscrewing the 7.5 mm screws, just lift the plastic and you will see the motherboard.