My Ipad 2 battery was at 50% when I put it down last night. This morning the battery was depleted. I've charged them and press the Home button but nothing appears. I've tried switching it off but nothing happens as well. The power off slider wont even appear. I've tried to reset by pressing the Home + Power button for 10-15 seconds. I saw the apple logo and then a little revolving circle appears and just keeps circling and it has been more than 30 minutes. I've kept the deviced charged and it kept making sounds every 7-8 seconds. When I've tried to switch it off again. Nothing happened. Please help. I've just bough the device via online on 7 Jan 2012.