96 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 S W I T C H T H E V I D E O I M A G E — If your computer is attached to an external monitor, press to switch the video image to the display.If the display is difficult to readA D J U S T T H E B R I G H T N E S S — Press and the up- or down-arrow keyM O V E T H E E X T E R N A L S U B W O O F E R A W A Y F R O M T H E C O M P U T E R O R M O N I T O R — If your externalspeaker system includes a subwoofer, ensure that the subwoofer is at least 60 cm (2 ft) away fromthe computer or external monitor.E L I M I N A T E P O S S I B L E I N T E R F E R E N C E — Turn off nearby fans, fluorescent lights, halogen lamps, orother appliances.R O T A T E T H E C O M P U T E R T O F A C E A D I F F E R E N T D I R E C T I O N — Eliminate sunlight glare, which cancause poor picture quality.A D J U S T T H E W I 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.S E E "E R R O R M E S S A G E S " — If an error message appears, see page 83.If only part of the display is readableC O 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 contrastcontrols.If the external monitor works, the computer display or video controller may be defective. ContactDell. See "Contacting Dell" on page 145.DriversWhat Is a Driver?A driver is a program that controls a device such as a printer, mouse, or keyboard. All devicesrequire a 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 installationor configuration is needed.book.book Page 96 Wednesday, October 26, 2005 1:00 PM
