GPU not detected

[Jampolo]

i have an ASUS GTX 460, and the computer is not recognizing it...
it has two slots, and when i put one of the 6 pin cables in (the default one with the box) and connect it up to power the fans spin and i get an output, but when i put a PCI E plug into the second slot, the computer powers up but i get no output (output is from the motherboard, DVI/D to HDMI connector, and then a HDMI lead to my TV))
i have a 500W Corsair CX psu
and this mobo
http://www.overclockers.co.uk/showproduct.php?prodid=MB-278-GI

 

[Orcvader]

You need to connect both 6-pin slots to power the 460 correctly...
And you need to connect the TV to the 460, not the motherboard.

 

[Jampolo]

cheers mate, turned out i dont need the default cable, two PCI E slots is working, installing drivers now,
cheers mate