Yes. Exactly what you are describing. It just reboots. Comes up with the logo and, if I still have the fire button pressed down, starts firing. It can do it 3 or 4 times in a row and then be fine for several hours. Or only once. Will attempt to get a vid of it doing it. I think what you are suggesting may be correct as I was just playing with it and got a very brief flash of a message saying "Shorted" - with no atomiser attached.