please help power probs.... :(

[Adsta]

Hey all,
I just got my CPU today so today was the day i can finally put together my new rig
Specs are as in siggy.
I've set everything up as per usual got everything plugged in etc.
But when i go to power it up all looks promising then after about 5-10secs it powers down again
The green LED on the mobo stays green.
I'm really at a lost i don't have any idea what it could be only thing i have tried is diff ram that still doesnt help.
All parts are new so should be ok. Could anyone please give me some advice on how to sort this

 

[Makhaira]

Maybe the power switch is jammed? That would fit with it powering on, and then powering down as if the power button had been held in for a hard shutdown.

 

[4T5]

Unplug Everything & plug it back it again.

 

[Adsta]

Aye in the process of that know will let ya know how it goes... im hoping maybe it was just a lose connection im basically taking every thing out and trying again. do you think maybe RAM might be a prob i heard about some times mobos RAM voltage is set quite low ~1.8V by default so if i use anything that requires more would that crash the system ?
Cheers