This is also assuming it doesn't just do something we don't understand at all, which it almost certainly would. Maybe it thinks of a way to shuffle the electrons around in its CPU to create a rip in spacetime and the whole galaxy falls into an alternate dimension where the laws of physics favor the AI and organic matter spontaneously explodes. We just don't know.

We can't foresee the actions an unaligned ASI would take in the same way that a housefly can't foresee the danger of an electric high-voltage fly trap. There's just not enough neurons and intelligence to comprehend it.