My HTC Rhyme just decided to turn off. Now it will not turn back on. This has happened before and it eventually turned back on after a few hours, but I don't think that is the case this time. There was no damage to the phone and the battery was still charged. No idea. This is frustrating because this is the second HTC Rhyme I've had to have because the first one broke, too. Equally maddening is that I've seen other people post this same problem but NONE of them got a straight answer. My upgrade isn't for another 8 months...what should I do??