No video signal

Okay, computer starts up just fine but will not send signal from either port (card and vga). I know all the components are good because they work in another computer. The only thing that is different is the motherboard. But the computer that im trying to get running has never been started before, someone put a brand new motherboard in it and then never finished it. So I put all my working stuff in it but no signal. Is it a bad motherboard or is there something needing done since its a new board and never been started up before?
 
On board video? If this is enabled and external pci for vid card not enabled, might be the problem. Manual? Some manufacturers have them in download from support.

To go further need to know what is in the system.
 
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