I had recently updated my iPod, charged it, and unplugged it When i truned it on, it wouldn't play a single song or video, and when i tested the video, it wouldn't go back, and the screen was black, and i could not change it back. So a few hours later, I checked it again, and it was still like it again, and i fiddled with the Hold Button stupidly (How should it be normally? shoudl the orange or the white be showing???) and i finally got on the computer and plugged it in ,but my iPod nor iTunes shows it is showing it plugged in.. Please Help!!