|I had this problem myself. I solved it by going to Dell driver support and obtaining the correct display driver for my operating system.|
So, you can check if this too is the solution for you by going to the website of the maker of your computer and going to their drivers download section. It should be free of charge. You'll need to specify your operating system (windows xp, 2000, 98, etc), the model computer you have and the type of driver, in this case the display driver.