I've done all this. I touched the screen, pushed the AV button in to try and switch sources, pushed the reset button multiple times, held the reset button in for 10 seconds put in the Nav disk and reset it. The entire front of the unit is not getting power except the eject button; no lights or response from any of the buttons. I even replaced the 10amp fuse on the back of the unit.
All it does when you plug it in and give it power is: the fan runs and it resets the dvd drive (you can hear this). Nothing appears on the screen. It only make a beep when you hit the eject button.
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