Remove the IDE-cable on the back of the DVD-drive.

IDE-cable removed!

There are 2 screws on each side of the DVD-drive. Unscrew them with a Torx10.

Left side screw.

Rigthside screw.

You can now remove the DVD-drive by lifting the tray upwards. If something is blocking , check the frontside of the xbox DVD-drive and make sure that small metalic plate isn't screwing up.

Remove the yellow powercable. You can do it with your hands or if it doesn't work , try with a screwdriver. Make sure you don't screw up thought. This powercable is Xbox specific you can't replace it easily.

You have now access to the whole motherboard. You can disconnect the IDE-cable from the motherboard too if you want.

Go to PART V : Remove motherboard from the case