Troubleshooting 105AD J U S T T H E WI N D O W S D I S P L A Y S E T T I N G S —1 Click the Start button and then click Control Panel.2 Click Appearance and Themes.3 Click the area you want to change or click the Display icon.4 Try different settings for Color quality and Screen resolution.SE E "ER R O R ME S S A G E S " — If an error message appears, see "Error Messages" on page 91.If only part of the display is readableCO N N E C T A N E X T E R N A L M O N I T O R —1 Shut down your computer and connect an external monitor to the computer.2 Turn on the computer and the monitor, and adjust the monitor brightness and contrast controls.If the external monitor works, the computer display or video controller may be defective. Contact Dell. See"Contacting Dell" on page 141.DriversWhat Is a Driver?A driver is a program that controls a device such as a printer, mouse, or keyboard. All devices require adriver program.A driver acts like a translator between the device and any other programs that use the device. Each devicehas its own set of specialized commands that only its driver recognizes.Dell ships your computer to you with required drivers already installed—no further installation orconfiguration is needed.NOTICE: The Drivers and Utilities CD may contain drivers for operating systems that are not on your computer.Ensure that you are installing software appropriate for your operating system.Many drivers, such as the keyboard driver, come with your Microsoft® Windows® operating system. Youmay need to install drivers if you:• Upgrade your operating system.• Reinstall your operating system.• Connect or install a new device.Identifying DriversIf you experience a problem with any device, identify whether the driver is the source of your problemand, if necessary, update the driver.1 Click the Start button and click Control Panel.2 Under Pick a Category, click Performance and Maintenance.
