The pilot's failure to maintain control of the airplane which was a result of spatial disorientation after takeoff into instrument conditions with an operationally degraded electronic primary flight display. Contributing to the accident were the pilot’s failure to properly utilize the airplane’s standby flight instruments, the electronic primary flight display system’s unaligned state prior to takeoff for undetermined reasons, and the pilot’s lack of knowledge of degraded autopilot functions with an unaligned primary display system.