PSU is a coolermaster Extreme 525W. H77 motherboard, Haf 912 case.
On the power supply manual, the diagram for the motherboard connector appears to show the colors of the wires in the reverse order, which I think might be the problem- could I have been sold an incorrectly manufactured PSU? There's only one way to connect the main cord, right? and it seems like the colors are ass backwards.
I can't think what else might be the problem. Unless it shorted out- I had everything on a wooden table but was standing on carpet while building it.
On the power supply manual, the diagram for the motherboard connector appears to show the colors of the wires in the reverse order, which I think might be the problem- could I have been sold an incorrectly manufactured PSU? There's only one way to connect the main cord, right? and it seems like the colors are ass backwards.
I can't think what else might be the problem. Unless it shorted out- I had everything on a wooden table but was standing on carpet while building it.