Last used my iPad a couple hours ago, set it aside as normal when done. Went back to it a few minutes ago, pressed the power button to wake it as usual, and nothing. Pressed the home button, and nothing. Tried both again, and apparently no life in the thing. Attached it to the AC adapter, still no life. It's just dead black. Have not seen any batter problem before; it was at least 85% charged when I put it to sleep a couple hours ago. Any ideas?