So I've got an X2gen MW19R LCD monitor. I got a 10ft Rosewill DVI-D cable to run from my Radeon x700 pro video card. When I use the DVI, all i get are these red, green, and blue squares on part of the monitor. My mouse cursor shows up, but nothing else. I have the latest ATI drivers, and the monitor is set for DVI. I'm all out of ideas. Help?