I have had my ipod touch 4g since Dec. and have had no problems until now. Recently the battery drained like it normally does, and shut off. I plugged it in to a pc and it wouldn't show that it was charging and the computer didn't recognize it. I tried pressing the home and power buttons at the same time, and that did not work. I tried the same things with it plugged into a macbook, but still it won't charge or be recognized. I have left it plugged in for a day, but it isn't charging. Is there anything I can do or do I need to take it to the Apple Store to get it fixed or replaced?