Hi guys, well I put together my first ever build today...and it won't power up. 
When the power button is pressed on the front of the case, the power supply fan just twitches a little bit, then that's it. No lights, no noises, and nothing else. Just a twitch from the power supply fan.
Any idea what might be wrong?
There is a 4 pin cable spare from the power supply, but there is nowhere to plug it in on the motherboard. I have the 8 pin, 24 pin and cpu fan all plugged in.
Also have the front panel wires connected like the LED's, reset switch, power switch, and I believe they are the right way around in regards to +/-.
I find it very weird that the power supply fan twitches when the power button is pressed, but nothing else happens at all.
Pretty sure I put the cpu in right, i.e the right way and also made sure it was not loose or anything.
Spec if it helps:
Gigabyte P67-A UD3 mobo
i5 2500k
HD 6950
Antec new truepower 650W power supply
I noticed that the backplate for the hyper 212 cooler is touching the case...could this make the motherboard short? Though if it could, I thought I'd at least get some life out of stuff for a second before it shorted, and also, it seems I wouldn't be able to avoid it touching anyway...
Any ideas?

When the power button is pressed on the front of the case, the power supply fan just twitches a little bit, then that's it. No lights, no noises, and nothing else. Just a twitch from the power supply fan.
Any idea what might be wrong?
There is a 4 pin cable spare from the power supply, but there is nowhere to plug it in on the motherboard. I have the 8 pin, 24 pin and cpu fan all plugged in.
Also have the front panel wires connected like the LED's, reset switch, power switch, and I believe they are the right way around in regards to +/-.
I find it very weird that the power supply fan twitches when the power button is pressed, but nothing else happens at all.
Pretty sure I put the cpu in right, i.e the right way and also made sure it was not loose or anything.
Spec if it helps:
Gigabyte P67-A UD3 mobo
i5 2500k
HD 6950
Antec new truepower 650W power supply
I noticed that the backplate for the hyper 212 cooler is touching the case...could this make the motherboard short? Though if it could, I thought I'd at least get some life out of stuff for a second before it shorted, and also, it seems I wouldn't be able to avoid it touching anyway...
Any ideas?
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