I think from previous issues, there was a hairline crack around the battery slot - I think it vibrated loose or I failed to seat it properly - battery ejected - drone dropped about 60' landed on top - after gathering up the pieces and returning to office - powered her up - LEDs, camera, gimbal all seemed to work (except could not rotate camera up and down) - none of the motors would start and I get an "ESC error, restart" - so far some findings indicate a bad motor -- apparently if one motor bad none will start (so I was told by a repair company) so before I sent it in to be fixed, if a motor is the problem I can replace it, if not off to a repair shop - then the next decision is cost of repair vs. just buying a new one..........a body is $50, mother board $150.00, shipping both ways probably $30-50, determining problem by repair $100 - so before all is known I am out $300 - and most likely there are unknowns........