I see the problem.
If I'm right, you installed the PCI-E NIC Card in the only PCI-E that you have in that board, but the problems is: That PCI-E Slot is only for graphic cards, not for NIC card like yours. That's the reason of your problem, because when the rig start, read the PCI-E slot as "used" and try to use it as video output...
For install that PCI-E NIC you need a PCI-E x1 and the one that you have is PCI-E x16.