So I just built my first PC last Thursday. Everything was working well until I had to plug in my psu. The cable that goes from the PSU to the wall I think maybe causing this. Because if my pc is on and I move that cable slightly, the whole d**n system shuts off. So I have to play around with it before the system decides to work once more. My question is, is it the PSU all together causing this? Or just a faulty cable? Thanks.