Thanks for the response - albeit, sarcastic ...The problem turned out to be the power supply. I have, in the past 30 years of being a PC enthusiast, learned a thing or two. The question I was asking, was based on a couple of remarks made by users on other forums saying that the SLI was not functioning on this board. The timing of my reading these remarks and the second graphics card not working. I will ensure that I offer more in the future so as not to insult or irritate others.