My galaxy s3 wont turn on?

[Reagan Tremblay]

Okay so I was watching a YouTube video. Then my phone screen went black and the buttons wouldn't work. I assumed that it simply turned off, but when i attempted to turn it back on, it did a little vibrate but nothing happened; the screen didn't light up, the light didn't turn on. Nothing. When I try to charge it, the same thing happens. I have tried to put it in safe mode and i have tried all troubleshooting methods. Can someone help please?

 

[belodion]

Welcome to Android Central.

You may need a new battery.

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