Phone fully charged but will not turn on

MY DROID RAZOR MAXX 2012 AND IT IS FULLY CHARGED AND IT FROZE SO I TURNED IT OFF AND WHEN I TURNED IT BACK ON IT STAYED ON THE LOADING SCREEN THEN AFTER A FEW HOURS OF BEING ON THE LOADING SCREEN IT WENT BLACK AND WOULD NOT TURN BACK ON:crying: I need halp cuz my phone has everything on it. HOW DO I FIX IT

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