Based on your description we can say that there may be a compatibility issue and that may be the reason why it is not working; however, I recommend you checking with the card manufacturer for a firmware update. Another good step is to test the video card in another board and in that way you can discard a hardware problem with the video card.
Here you have the Nvidia support link:
The problem was BIOS, now the card is working fine. Thanks!
I am glad to hear that!.