Greetings, I have just recently acquired a used superpad3 and It turns on until the desktop comes, Then it is just a blank screen. I Suspect it may have the brightness to zero bug but im not sure. When i hold the power button down after the tablet it is on The desktop shows up for a split second just prior to the tablet powering off. -I have tried various ways of "factory reset" but no button combinations have shown any response. Here is a video demonstrating the issue: Any assistance would be greatly appreciated.