Mine has done this twice, the first time i took it to the store but i watched what they did. The second time i tried this and it worked for me so good luck.
Unplug it if it is plugged up and remove the battery.
Wait a few seconds and plug it in (battery still removed)
Replace battery
turn on.
Hope it works for you.
It worked for me this time.
Starting here is a reply from someone else to the Answerer! Anonymous:
I've tried that millions of times, and lots of other things. Nothing Works! This sucks. I heard smartphones usually don't last that long though.
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