Corsair RM550 Problem

CuddlyBunny

Reputable
Jan 23, 2015
3
0
4,510
Hai. I recently needed to upgrade my computer, The Mobo, PSU and Case needed replacing so I swapped them for an ASRock Z77 Extreme4 Mobo, A NZXT H630 and Corsair RM550.

My old machine only needed a 330 watt PSU by the way.

Anyway. Whenever I try to turn it on, The PSU clicks and the machine shows no sign of life. About 10 seconds later, it makes a fainter, almost inaudible click.

The only weird thing is. When I flick the switch on the back of the Corsair PSU (After it has clicked) on and off really quickly; It turns on perfectly, POSTs and boots into the Operating System where I am typing this question now.

This is 100% repeatable... Just really annoying that I have to climb my hand over to the back.

It also happens with the Onboard Power button or by shorting the power pins.

Any ideas? I am stumped. D: