The incorrect monitor driver may limit the resolutions that Windows will allow your monitor to display.
Some computer monitors have specific drivers that can be loaded. These drivers may include features such as color instructions tailored for that monitor or limiting the monitor to only those resolutions that it is capable of displaying. If Windows is unable to detect the type of monitor connected to your computer when it is installed, you may end up with a generic monitor driver such as “Generic PnP Monitor” or “Standard VGA 640×480.” This may result in your monitor displaying a resolution far lower than its capacity. Update your monitor driver to resolve this issue.
1. Right click on the desktop and choose “Properties” if you are running Windows XP or “Personalize” if you are running Windows Vista or 7.
2. Click the “Settings” tab, then click the “Advanced” button if you are running Windows XP. If you are running Windows Vista, click the “Display Settings” link at the bottom of the window, then click the “Advanced Settings” button. If you are running Windows 7, click “Display,” “Change Display Settings” and “Advanced Settings.”
3. Click the “Monitor” tab, then click the “Properties” button.
4. Click the “Driver” tab, then click the “Update Driver” button.
5. Click “Don’t search, I will choose the driver to install” if you are running Windows XP, or “Locate and install driver software manually” if you are running Windows Vista or 7.
6. Click “Let me pick from a list.”
7. Remove the check from the box labeled “Show compatible hardware” if the monitor that you want to use is not displayed.
8. Select the monitor driver that you want to use (e.g. “Super VGA 1600×1200”), then click “Next.” The driver you have selected is installed.
9. Click “Close” or “OK” in each open window, then restart the computer if prompted.