At the point you starts asking to prove a negative, like "Can you prove that there's no God?", you should have the self-awareness to realise that no argument will convince you, because you are proceeding on the power of belief and belief alone.
If you don't have the self-awareness to realise that you are asking the same question as "Can you prove there's no God?", then I'm afraid no proof will ever be sufficient for you.
If you don't have the self-awareness to realise that you are asking the same question as "Can you prove there's no God?", then I'm afraid no proof will ever be sufficient for you.