serious hardware people don’t post in this subreddit.

my psu is coolermaster 750w psu 2 direct PCIe power plus 1 daisy chained is plugged into the GPU

I’d guess that’s your problem.

3080 is known for large power spikes afterall, so your psu just might not be handling it.

usable? Sure

Would i want to use one? Not when i could find a dirt cheap quad core (or better) used laptop.