After rebuilding my pc, I turn it on and after a few seconds it turns itself off (no beeps)

Merrick2472

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Sep 20, 2014
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So I got a new pc case. I kept all the same parts inside, just moved them into my new case (all parts were working yesterday). When I turn my pc on, all the fans work, on CPU, case and graphics card, but after a few seconds it turns itself off (making no beeping noise). I think I have set it up correctly, but it was only the second time I've put together a pc, so I'm a bit of a noob. Now does anyone know what could be the problem? Have I wired it wrong?