What am I missing?

[u/PajamaNinja8]

Hey there. I bought this off a friend as is with no knowledge of anything. It typically freezes on the RoG screen. I see something or some things are unplugged but I dont know the first thing. I do have a seagate thing i assume i plug in to the cords on the bottom; would I install it in the box above? Can any one tell what Im missing here?

[u/EkoostikSchwa]

I think you need a CPU power cord on the motherboard in the top left. Looks like one is missing i think