Even some atheist believers in pre-beginning virtual fluctuations to start the beginning, assume that there was time and energy, possibly eternally. What if the creator just existed, having all the ur-exo-space and eternal time with him, all the energy*?
There is no "beginning" if there is "eternal". Being an atheist has nothing to do with believing contradictory things. Also, what if the creator is my dog, having gone back in time? Asking ridiculous questions makes them no less ridiculous simply because you couch them in pseudo-scientific and religious terms.