Dell Vostro 220s (Late 2008) - Manual (Page 32)

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Troubleshooting
C HECK THE DIAGNOSTIC LIGHTS — See "Power Lights" on page 9.
C HECK THE MONITOR SETTINGS — See the monitor documentation for instructions
on adjusting the contrast and brightness, demagnetizing (degaussing) the monitor,
and running the monitor self-test.
M OVE THE SUBWOOFER AWAY FROM THE MONITOR — If your speaker system
includes a subwoofer, ensure that the subwoofer is positioned at least 60 centimeters
(2 feet) away from the monitor.
M OVE THE MONITOR AWAY FROM EXTERNAL POWER SOURCES — Fans, fluorescent
lights, halogen lamps, and other electrical devices can cause the screen image to
appear
shaky. Turn off nearby devices to check for interference.
R OTATE THE MONITOR TO ELIMINATE SUNLIGHT GLARE AND POSSIBLE
INTERFERENCE
A DJUST THE W INDOWS DISPLAY SETTINGS —
Windows XP:
1 Click Start → Control Panel→ Appearance and Themes.
2 Click the area you want to change or click the Display icon.
3 Try different settings for Color quality and Screen resolution.
Windows Vista:
1 Click Start → Control Panel→ Hardware and Sound→ Personalization→
Display Settings.
2 Adjust Resolution and Colors settings, as needed.
3D image quality is poor
C HECK THE GRAPHICS CARD POWER CABLE CONNECTION — Ensure that the power
cable for the graphics card(s) is correctly attached to the card.
C HECK THE MONITOR SETTINGS — See the monitor documentation for instructions
on adjusting the contrast and brightness, demagnetizing (degaussing) the monitor,
and running the monitor self-test.
Only part of the display is readable
C ONNECT AN EXTERNAL MONITOR —
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