Who created God?

Who created God? Where did He come from? This is a question that was introduced two posts back in;

A question to atheists: Could the universe just pop into being?

The question was:

"I have seen the question posed on this series of clips on Youtube,

"Ok Then, When did God come into existence? Did he just "pop" into the universe as well, Or just has he, "just always been"? Theists have the same flaw, just one step back. I personally think that there is no God but at this time, humans cannot possibly perceive this depth of thought, we are not yet advanced enough to understand it."

* I capitalized God in this quote where the author did not.

What sayeth thee? how do you handle this question as a believer or non- believer?"