AB,
The question revolves around what actually determines and drives a conscious act of will to contemplate one's own existence.
No it doesn’t. “drives” assumes something to do this supposed driving as a deliberative act, which you’ve yet to demonstrate as a necessary component of consciousness. What you’re doing here is called begging the questions, one of the various logical fallacies into which you generally collapse.
I fully agree that there is something which determines such an act of will,..
No-one has said that, at least not in the sense you imply. “determines” is a how question, not a why question – it’s “determined” only in the sense that the black ball going into the pocket is determined by being hit previously by the white ball travelling at the required angle and velocity.
…and it certainly is not random.
Then it’s determined.
Does it derive as an inevitable result of endless chains of PHYSICALLY DEFINED cause and effect?
Not “physically defined”, just “cause and effect” and as that’s what all the coherent reasoning and evidence we have strongly implies then yes.
Or is there a non physical cause which is not bound by the laws of physics, generated from within the present state of our conscious awareness?
As there’s no definition of “non physical”, let alone any coherent reasoning or evidence that supports the assertion then probably not, no.
You can't just proclaim that the laws of physics are irrelevant.
Straw man. No-one does that – just the opposite in fact.
Physical reactions are part of the time dependent material behaviour of our universe, and we can exert no control over the laws which define them.
Irrelevant.
The divinely inspired words from the Christian bible…
Unqualified faith claim. If you want it to be taken seriously, demonstrate first a divine at all, second that this divinity is the one in which you happen to believe, and third that this divine something inspired anything.
…allude to our soul being not of this universe and existing in a timeless (eternal) state.
No doubt. And the Harry Potter books allude to people flying around on broomsticks. So?
Such a timeless, ever present state would explain how our soul can invoke a choice at will from this present state which is not just an inevitable reaction to past events.
No it wouldn’t, first because it’s incoherent gibberish, and second notwithstanding because whether physical or not (whatever the latter would mean) you’d still be stuck with the determined vs random binary options. “Miraculous”/”it’s magic innit?” (which amount to the same thing) answers nothing at all.