Hi, I just bought a C91 Android 4.0 zenithink zt280 Cortex A9 MID tablet. When I turn it on, the screen goes white, but nothing happens. After a while it shuts off. If I press the icon of the 4 square buttons on the left it makes a "clicking" noise, like it registered the input, but nothing happens. I was hoping to give this as a gift on Tuesday! Thanks! Edit: Fixed. Had to open the back and reattach a cable that got loose. A little disappointing.