it was dead for about 3 days, i plugged it into the charger for about an hour, then when i felt it...it was EXTREEMLY hot, like burning hot. so i freaked out....unplugged it took about the battery and tried to boot. when i tried to boot....i still get the haptic feedback (viberations of lockscreen, sounds, texts, calls,etc.) but my screen is COMPLETELY BLACK. i cant see anything. the backlight is still on and it still works but my screen is just all black.....please!!!!! help what can i do??