Click start control panel administrive tools computer management device manager scroll to display adapters + to expand you might see a yellow question mark ? or exclamation mark ! red x right click select reinstall drivers if your computer came with a motherboard disc the drivers could be on it or you could download cnetdownload.com on the home page you should see the download software finder under that there will be a list platform, category sub category price from the category drop down list select drivers then from the price drop down list select free or which ever applies to your need http://download.cnet.com/%7Bvalue=http://www.download.com/ati-catalyst-display-driver/3000-2108_4-10608736.html This release for all Radeon family products updates the AMD display driver to the latest version. This unified driver has been further enhanced to provide the highest level of power, performance, and reliability.