I went to check my TB [this is the replacement for the first one that was bad] and I press the button to turn on the screen and all is black. I wind up having to take the battery out and put back in to start then I get a screen that looks like an old series of dos command lines - I wait it sits there I turn it off again replace the battery and it starts up normal. What should I do if this happens again?. Seems working fine since. I have one game app that freezes up some - tapfish - it is a silly game. Could that be causing problems?