Hi, first post here... I'm trying to help my sister debug a problem with her Dell monitor. It's a flat panel, maybe four years old. Three weird problems, and I'm not sure if it's the monitor or the video card. 1. Occasionally, her window bounces! I mean, if she's using her browser or her Outlook e-mail, parts of the display are bouncing up and down. I've never seen it. 2. Monitor occasionally goes into self-test mode. I've tightened the cables, but it still happens now and then. She now tells me that the floating colored box is also bouncing a little. 3. She noticed a blotch of broken color on a grey area when browsing a site. Any clues? Thanks in advance.