Unscrew the screws on the outside.

Slide the top cover a bit to the back, and lift it from the enclosure.

Remove the various pieces holding in the power supply.

Remove power cable (already cut of in the photo).

Unscrew screws.

Disconnect mainboard cables.

Remove the power supply from the enclosure.

Disconnect the cables connecting the mainboard to the front panel.

With a flathead screwdriver, unclip the 2 topside clips, and 3 clips on the bottom of the enclosure, and the front will detach.

Unclip the 4 clips from left to right, and remove the panel.

With the pliers, clamp the white connector and push it through.

Unscrew the screws and remove the mainboard from the case.