Dell PP26L owner manual Drivers, If only part of the display is readable, What Is a Driver?, 147

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 —

Windows XP:

1Click Start→ Control Panel→ Appearance and Themes.

2Click the area you want to change or click the Display icon.

3Try different settings for Color quality and Screen resolution.

Windows Vista:

1Click Start → Control Panel→ Hardware and Sound→ Personalization→ Display Settings.

2Adjust Resolution and Colors settings, as needed.

R U N T H E VI D E O D I A G N O S T I C S T E S T S — If no error message appears and you still have a display problem, but the display is not completely blank, run the Video device group in the "Dell Diagnostics" on page 115, then contact Dell (see "Contacting Dell" on page 201).

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 127.

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 then 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 201).

Drivers

What Is a Driver?

A driver is a program that controls a device such as a printer, mouse, or keyboard. All devices require 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.

Troubleshooting

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