My HTC Rhyme is about 7-8 months old. Today, after charging all night, it simply shut off. I am unable to turn it on to complete any type of troubleshooting. I took the back off and remembered that there is not removable battery or anything. I have seen other posts about this issue, is this an ongoing issue. Is it covered by a warranty replacement. I would like to know what I am supposed to do. I have tried placing it back on the charger and sometimes the icons at the bottom light up or the green charging light comes on, but it will not power up. If I receive an email, I hear the notification, but still nothing. Help please. Any advice would be great.