Dell NY105 manual If only part of the display is readable, Picture quality

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.

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. If the problem persists, contact Dell (see "Obtaining Assistance" on page 143).

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 82

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 "Obtaining Assistance" on page 143).

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Troubleshooting