Upgraded build not powering on

[DITC]

I've got no reaction when I hit the power button on my case. A Coolermaster Cosmos S. Had no problems just a few hours ago with my old hardware in it.

I put in a new motherboard (asus p755d), new ram (8gb mushkin), new cpu (i5 760), new gfx card (gtx 460).

The green boot led on the MB is on.

Tried setting the power_sw cable both ways.

There's no reaction when I hit the power button. Is there any way I can start the system with a improvised power button or something to rule out the actual button on the case?

 

[Dangman]

Just jump the two power pins on the motherboard with a screwdriver.

 

[DITC]

Okay... no reaction on that.

 

[Dangman]

You sure you plugged in all the power cables?

Oh and follow the stickied "Basic Troubleshooting Guide" on what to do when the PC does not POST.

 

[DITC]

Ok, for future reference, figured it out: That 3 pin cable on the ATX power cable, I guess it's the pwr_fan cable? It needed to be plugged in to a cable with the same colors coming from the Cooler Master Cosmos S case. Forgot about that. It's attached to a ATX power cable extender that comes with the case.

Now, how much can I clock this I5 on stock cooler? Hehe. It's not possible to use my Ultra 120 that I used on my socket 775 is it?