No Display In new Build: Pleaseee Help:

[SgtSmokeyMcPot]

I just got a new rig
Processor- i5 3570k
Gigabyte GA - Z77XUD5H -WB :
Memory-Gskill ripjaw 8gb
Hardrive-1tb 7200Rpm Western Digital
Corsair Force Series GT 240 GB SSD Internal Hard Drive (CSSD-F240GBGT-BK)
Dvd writer/reader : Lg
7500w power supply cooler master
HAF 922
Zotac GTX670 Amp Edition

Everything has been connected but I am unable to get a display on my screen.

>I tried connecting my old motherboard in the new rig, and the display came up just fine. So as to check if there was a Video card Problem.
>I connected my Old video card into the new gigabyte motherboard, and the display came up fine again. So as to check the mother board slot function.
> But when I connect the GTX670 to the Gigabyte GA-Z77XUD5H -WB, there is no display.
>The fans on the Video Card come on. I hear the single beep also prompting that everything is in order with ram. But there is no display.
>All the fans in the case also turn on and I can see the power light on the motherboard also.
>I have also tried switching the motherboards onboard graphics off but Still no display.

Could someone please help me as to what I might be doing wrong?
All your help is very much appreciated.

 

[Jaydip]

what happens when you plug 670 in your old motherboard?

 

[SgtSmokeyMcPot]

It works fine the display come on I can get into the bios, and change settings. Even my old video card in the new mother board gives me dsiplay.
Is there a need for bios update or something?
This Is a completely new build so I have still not Installed an OS. I have just connected it all and am looking for a display, to begin with.

 

[SgtSmokeyMcPot]

okay thanks guys anyways I found my problem..It was just a matter of switching the 20 pin connector to the 24 pin connector to give extra power and booyah! all is well....
thanks