No Power

[IlliniGuy]

First time builder help - I connected the motherboard, processor, RAM, video card. I hooked up the monitor, mouse and keyboard. I connected the 8-pin and 24-pin on the MoBo to the power supply.
When I flip the switch for the Power Supply, nothing happens - no sounds, no lights. I'm connected to a power strip and I'm running my monitor off the same strip, so it seems to have power.

Is there something I should check before I chalk it up to a bad PSU?

System
MB GIGABYTE|GA-P67A-UD3 P67 LGA1155
WIN HOME PREM 7 64-BIT ENG 1PK DSP - OEM
MEM 4Gx2|G.SKILL F3-12800CL9D-8GBXL
CPU INTEL|CORE I5 2500 3.3G 6M R
SSD 60G|OCZ OCZSSD2-2VTXE60G R - Haven't installed yet
CASE ANTEC|THREE HUNDRED BK RT
PSU CORSAIR|CMPSU-650TX 650W RT
HD 1T|SAMSUNG HD103SJ 32M 7K % - Haven't installed yet
DVD BURNER LG | GH24NS50 % - Haven't installed yet
GeForce GT430 1024MB PCIe 2.0 x16 Video Card

[IlliniGuy]

So I tried the paper clip method on the power supply and the fan on it started running so I know that it isn't completely DOA. Other things I can try???

[RickyTick]

Did you press the power button on the front of the case?

[IlliniGuy]

Yeah, so that was basically it (sheepish grin)...
I didn't make the connections for all of the front panel support, and when I saw that wire dangling, it dawned on me. Thanks for the suggestion. I'm now moving forward - first boot was successful, second one as well, and now we're onto Windows 7 install.
The only thing I noticed was that I never heard the audible beep when the MoBo powered on - not sure if that's an issue or not...