Hello, I was given this tablet free, and it was working pretty good for me, for what it has. One day later the menu button on the back of it has achieved this sort of, no longer springy/buttony feel, and thusly the auto hide type menu at the bottom of the screen pops up and down like "Whack-a-Mole" every time i move it even slightly. I did manage to root it already. Is there an app to disable things on the tablet? Like, say this busted menu button? Because there's one on the touch screen that works fine. Thanks a lot!