Looks like you havent taken off the cover on the bottom of the card, the bit thats black plastic that says asus. That covers the contacts on the slot for shipping.
1)Is the image above an image of the issue OP is having?
2)I'm pretty sure that card still has the protective cover over the PCI connector.
3)Try removing the black protective cover from the PCI connector and installing it.
Looks like you havent taken off the cover on the bottom of the card, the bit thats black plastic that says asus. That covers the contacts on the slot for shipping.