as i have had similar problems with my rx 580 4gb where it would just draw to much power and it would just shut my pc down all together so i removed the oc and its working fine now
That’s pretty Much what I would have suggested as well but change the cpu to the 2700x and gpu to either a rtx2070 or a rx 5600xt/5700xt and a 500gb ssd and a 1tb sshd tbh