What did he use, then? ... Harry Potters wand ? ... Magic?
This is what you are left with.
Though I did say that I wanted to avoid this becoming a crevo thread, I feel I should answer this one here.
Atheists and evolutionists: At some point billions of years ago, an infinitely dense and hot singularity exploded and the entire Universe resulted.
Me: Oh? Well, where did the material for that singularity come from in the first place? Did Harry Potter create it with his wand? And what caused the explosion? Magical Teletubbies lighting their flatulence?
This is what you are left with.