Now that I have rooted my nook and it does almost everything I want (except I still cannot purchase non market apps but I will work on that later) it has started hanging up if I turn it off and then turn it back on. It will go no further than the screen that says Nook Color. It gets to that point - Nook Color runs across the screen and then disappears, starts to come back across the screen and will get no further than the C and part of the O in color. It just hangs up. Amy suggestions on what to do?