Default [Q] vk810 Won't Turn On

I have the LTE version of the G Pad 8.3. I have TWRP and an unofficial CM11 on it. I left it on long enough for the battery to be drained and now it won't turn on at all. I have plugged it into the charger for over an hour. The power button does nothing, holding Vol - and Power does nothing. I am at a loss. Any advice would be appreciated.