GLSmith wrote:
Step 1) Try a different Nikon Lens (not a 3rd party), if no changes, reset your camera to factory default as described in owners manual, also try a different memory card...not usual, but it may apply (Also format the card in the camera, not on PC
If all that fails, call Nikon Tech Support, they have tons of hidden ideas before they say (send it in)
The OP fixed it.