ipad not turning on
i was trying to update my pinterest app and it would not work so i held down the top button and then front button till the apple logo appeared but now the logo just stays there and then the screen will go dark, so i will try and turn it back on but the apple logo comes up again and just sits there. I left it over night and didn't bother it and when i went to use it the next morning it still was doing the same thing. can someone please help me!!??
iPad 2 Wi-Fi, iOS 6.1.4