My Dell Latitude D810 with XP Pro SP2 and an ATI Mobility video card once worked fine with my Dell 2300MP projector -- VGA to VGA. Until I got the Dell docking station. The docking setup works beautifully; the second Dell monitor (the card supports two monitors) was immediately recognized and is driven at the proper resolution (Hi-res widescreen).
What no longer works is the connection of the notebook to the projector. When connected to the notebook, the projector blinks, shows only a tiny part of the screen but blown up to huge size, and the notebook beeps -- deep and slow. The notebook's screen also shows this bloated fraction of the PowerPoint screen, and the cursor has a circle around it. Obviously, one explanation is that the recognition process is no longer working, although I do not know whether the problem is on the notebook side or the projector side of the VGA cable. Although these are all Dell products, I have found nothing applicable on the Dell Web site, not even an explanation of the beep code (although this might be coming from the video card). There is probably a reset button to push somewhere or a reset routine that will purge the notebook of any memory of the Dell monitor on the dock station. Ideas?
My UConn 8AM MWF class will be forever in your debt if we can fix this problem. They need some good news after yesterday's game.