My monitor has a problem where the entire screen seems to vibrate. It looks like I can can see each individual bar (running horizontally) move up and down very fast. I've plugged in different monitors and the effect appears on the other screens, so I believe that it is something else. Some people have told me that it is my video card, so I opened my computer up and checked it out. As far as I can tell I don't have a video card, so I looked to the monitor input, but that appears to be sodered onto the mother board. Does anyone have any thought? I appreciate your help.