1. power off (if needed) 2. unscrew all screws 3. replace everything non-functional 4. screw all screws, use blue fixator 5. power on 6. notice that one of

1. power off (if needed) 2. unscrew all screws 3. replace everything non-functional 4. screw all screws, use blue fixator 5. power on 6. notice that one of bus ribbons was forgotten or misplaced 7. redo steps 1-5 8. get a final result, power on