Pci express will not work

U WIL HAVE TO CHANGE THE JUMPER SETTINGS ON THE MOTHERBOARS...I HAD THE SAME PROBLEM..REFER TO YOUR USER GUIDE...IT HAS GOT DETAILED INFORMARTION

Your N9600GT provides two HDMI out puts for dual display.
Even though you are currently only using one HDMI. Switch your monitor cable to the other HDMI out put. See if you now have display.
Also while in the bios allow, Page 2-27 in manual, Allocate IRQ to PCI set to [Yes]. Page 2-24, Internal Graphics Mode Select, [Disable]

Luck!
Mike

that's tough, if you're choosing to boot from the pci-e first, and it's still going to onboard, it sounds like the graphics card is bad (maybe just seated funny)

if you're disabling onboard, and it's still coming out onboard, maybe a bios update?

I'd probably try a bios update, and reseat the graphics card, then if still don't work, i'd try it in a different box or just return the card =(