Well I just got a new desktop last week and came back from being out in the field for a week (USMC) and it doesnt work. The screen tends to go all crazy on me. I called dell and they installed the lastest drivers for the video card. Computer has an NVIDIA Geforce 260 GTX video card. I dont even know how to describe what it does but I tried adjusting the resolution, changed from VGA cable to HDMI and back. Tried adjusting the refresh rate 50/60hz, did a system restore and have not had any success. A picture of the forementioned is posted below. Thanks for your help!