Power button broke, can't turn it on again! HELP

Hi everyone,

I really hope you can help me.... A few days ago my power button didn't work anymore, so i found other ways to unlock and lock my phone. No problem. But now my battery was empty and it fell of.... Can't turn it on again! It is fully charged and still works fine, except the power button. What can i do to turn it on? I have no root. If you can help me out you're a hero!