So one day I was just watching a video it was working fine then out of the blue the screen shut off. I tried to turn it back on to no avail. If I plug the charger in the charging/ indicator turns on and the power button is white but still it won't turn on. I've tried letting the battery drain and then plugging it back in but it won't turn on and I've also tried holding down the power button but nothing happens. Someone please help. Thanks in advance.