Hi all, I have a Zenithink ZT280 C91 1a, for a couple of days the tablet worked OK except when the battery went below 75% the screen would not turn on unless the charger was plugged in. I upgraded to the latest software which was ok for a short period of time, the battery reduced below 60% and the screen again would not turn on unless the charger was plugged in, I tried to flash the software again and the screen became totally unresponsive. I then tried an alternative Rom Zenidroid but the screen remained unresponsive, I have since returned to the official software but again the screen is still not working. Has anyone else experienced this and if so what did you do to fix it?