I am running Vista with a NVIDIA GeForce 880GT card. I am running my primary Samsung monitor with a DVI connection. I am trying to hook up a second monitor using a DVI to VGA adapter. System is recognizing the secondary monitor and says it is functioning properly, but I get NO SIGNAL. I tried plugging my primary monitor into the secondary socket and it works fine. I have setup the secondary monitor in NVIDIA and it, also, recognizes it. Any suggestions?