I just got a galaxy siii a couple of weeks ago. This weekend I went to check my phone and the screen wouldn't turn on. I thought it was dead but the battery was in the 80's when I checked a few minutes before. I tried several things but the phone won't turn on or even go to the startup screen. When i have it charging the red light comes on but only if the battery is removed. If the battery is in the phone the red notification light doesn't come on. Please help.