My tp was sitting on my dresser in it's case. I pushed the power button and opened the case and all I see is a big USB symbol in the middle of the screen. I tried to hold the power button to shut it down. Nothing. I put it on the touchstone. Nothing I plug the power cord into the TP. Nothing. Plug the power cord into my USB port on my PC and nothing. Still just the USB symbol. thanks for any help.