During an upgrade from XP to Windows 7 I experienced a problem with my ViewSonic vx2235wm display and NVIDIA GeForce 8400gs video card. The display is powered and the blue light comes on when the computer is starting up. I get a couple of flickers of lighter gray on the display but no picture. I have upgraded the drivers
for the NVIDIA card and the display but no help. The diplay is on a DVI-D single link connector with the video card. I can hook up a Sony display to the VGA connector in the NVIDIA card and get a picture fine. Neither NVIDIA or ViewSonic have come up with anything that helps. Any suggestions?