There is no standard or not standard science that says everything has a cause, that's just something you made up and have no evidence to back it up. Even if you could prove everything has a cause, the problem of multiple creators is still there.
That I said that^^ is something you made up. In addition, it doesn't have anything to do with proving God or not. Why are you so against me that you go off-topic all the time just to try to damage me? Oh yes. You are adamantly against God... just another proof that He exists.
EDIT: Science consensus says that when there are multitudes of things that happen in a certain way, with nothing in opposition to that happening, the happening is accepted as factual. Cause and effect is known way beyond the 1040 to zero (or whatever it is) number of happenings that make it scientifically a fact in everything. If one truly, pure-spontaneous thing were found, it would put a dent in the C&E fact. But it wouldn't destroy it... scientifically.