Why wont my Nokia Lumia 625 turn back on?!?!?

[Windows Central Question]

My Nokia Lumia 625 froze so i turned it off. It was on 60% battery. I turned it off and now it wont turn back on. I have tried charging it but it still wont turn on, Please help as i am now unable to use my phone!

 

[MDK22]

Have you tried a soft reset ?
... hard reset ? Search for the key combination

If it froze, how did you turn it OFF ?