I bought a nuvision duo draw windows 10 pc/tablet all of a sudden it will not power on even though the blue light is lit up on the side so maybe there is hope. I thought maybe cause I hooked a usb power hub to it something might have happened .I called customer service they just said hold down the power button for a minute release and hold it down for 30 seconds she said it was like a jumpstart so I thought it was the cheap charger that came with it.so I upgraded to a new one the rep at nuvision said make sure it is at least 9 volts I just new it would come right on once I plugged that new charger in I don't know what to do now am I missing something? please help.