The Tablet or device about 70% when it suddenly turned off not powered off. No matter how hard i try it just did not open. It vibrates and we somewhat clicked on the flashlight and it works. It vibrates and you can interact with it but it shows BLACK SCREEN nothing else. We tried powering it off and restarting the device but it doesn’t turn on. For the past few days this happens and all i do is press and hold on the power button and the volume down keys, it worked but now it doesn’t. I’m frustrated, i’ve been doing this for hours… Please help.