Dell PP19L If the display is difficult to read, If only part of the display is readable, 100

C H E C K T H E B A T T E R Y — If you are using a battery to power your computer, the battery charge may be depleted. Connect the computer to an electrical outlet using the AC adapter, and turn on the computer.

TE S T T H E E L E C T R I C A L O U T L E T — Ensure that the electrical outlet is working by testing it with another device, such as a lamp.

C H E C K T H E AC A D A P T E R — Check the AC adapter cable connections. If the AC adapter has a light, ensure that the light is on.

C O N N E C T T H E C O M P U T E R D I R E C T L Y T O A N E L E C T R I C A L O U T L E T — Bypass power protection devices, power

strips, and the extension cable to verify that the computer turns on.

A D J U S T T H E P O W E R P R O P E R T I E S — Search for the keyword standby in the Windows Help and Support Center. To access the Help and Support Center, see "Windows Help and Support Center" on page 13.

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 <Fn><F8> to switch the video image to the display.

If the display is difficult to read

A D J U S T T H E B R I G H T N E S S — Press <Fn> and the up- or down-arrow key

M 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 external speaker

system includes a subwoofer, ensure that the subwoofer is at least 60 cm (2 ft) away from the 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, or other 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 can cause 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 —

1Click the Start button and then click Control Panel.

2Click Appearance and Themes.

3Click the area you want to change or click the Display icon.

4Try 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 "Error Messages" on page 88.

If only part of the display is readable

C O N N E C T A N E X T E R N A L M O N I T O R —

1Shut down your computer and connect an external monitor to the computer.

2Turn 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 135.

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Troubleshooting