I have windows 2000 professional installed on a workstation. Every once in a while the right part of the screen freezes and I cannot click on it. You can see the full wallpaper in the background but when you open up a program about 2 inches of the right side of the monitor shows the wallpaper. The program cannot expand to take up the whole monitor. If you try and click and drag an icon to the right side of the screen it disappears. I have restarted windows and it goes away temporarily but how can I make it go away for good.