60 Solving Problemsw w w . d e l l . c o m | s u p p o r t . d e l l . c o m If only part of the display is readableDriversWhat Is a Driver?A driver is a program that controls a device such as a printer, mouse, or keyboard. All devices requirea driver program.A driver acts like a translator between the device and any other programs that use the device.Each device has 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.NOTE: Any third party product used with your Dell computer may require an updated driver from thethird party manufacturer.NOTICE: Ensure that you are installing software appropriate for your operating system.Many drivers, such as the keyboard driver, come with your Microsoft® Windows® operatingsystem. You may 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 yourproblem and, if necessary, update the driver.1 Click the Start button and click Control Panel.2 Under Pick a Category, click Performance and Maintenance.3 Click System.4 In the System Properties window, click the Hardware tab.5 Click Device Manager.CO 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 page 92).