I have a NVIDIA GeForce GTX 650 Ti. I have an HDMI plugged in to it and it works fine, I also have a standard VGA/D-SUB plugged in as a second monitor and it works fine. When I try to plug in my DVI-D cable to both my 3rd monitor and the card, the monitor goes into "DVI Power Saving Mode" and I just dont get it. Please help if you can.