Solving Problems 71If the display is difficult to readIf only part of the display is readableCH E C K T H E S YS T E M F O R P O W E R — Ensure that the system has battery power or is plugged into anelectrical outlet.AD J U S T T H E B R I G H T N E S S — Press and the up- or down-arrow key.MO 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 from thecomputer or external monitor.EL 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.RO 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.AD 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 M E S S A G E S " — If an error message appears, see page 59.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 "Contacting Dell" on page 110.
