Dell 4500C Personal Computer User Manual


 
56 Solving Problems
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If the screen is difficult to read
TEST ANOTHER MONITOR If another monitor is available, connect it to
the computer.
CHECK THE DIAGNOSTIC LIGHTS See page 60.
CHECK 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.
CHECK THE VIDEO CONNECTOR If you purchased the optional video
card, ensure that you connected your monitor cable to the correct video
connector.
MOVE THE SUBWOOFER AWAY FROM THE MONITOR If your speaker
system includes a subwoofer, ensure that the subwoofer is at least 60 cm (2 ft)
away from the monitor.
MOVE 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.
ROTATE THE MONITOR TO FACE A DIFFERENT DIRECTION Eliminate
sunlight glare, which can cause poor picture quality.
ADJUST THE WINDOWS
®
DISPLAY SETTINGS
1 Click the Start button, and then click Control Panel.
2 Click Appearance and Themes.
3 Click Display, and then click the Settings tab.
4 Try different settings for Screen resolution and Color quality.