My Neo X8 plus suddenly stuck on start screen. I have done many restarts with and without the recovery buttom pressed. The start up screen (Green Minix logo) stays for a couple of seconds on and then turns to black screen. I have tried again with the USB plugged with the latest software ZIP file in and again the same description as above. Please Help. I have no warranty for the unit. I have not made any updates from the time it was purchased in 2015.