I just bought my kids two of the same tablets and can not turn them on, even though there fully charged. So I used the reset button to get them to turn on. Now they both will not turn off, and there bran new. Everything else seems to work but the power button. And yes. I have held them down for long periods of time and nothing happens. I've let up on them and pushed back down on them and they refuse to turn off. Does anyone out there know what's going on??