5th generation iPod touch, only a month or two old, stuck with screen off and won't respond to anything. Won't charge, not recognized on a computer, and won't even reset by holding the sleep and home buttons for 10+ seconds. This happened a few times before but it resolved itself after a while, but this time it's been overnight but still doesn't work. I think it is iOS 8's glitches and schenanigans (iOS 8 is worst OS update EVER!) Can anything be done or does it need to go to a Genius bar?