Dell Dimension 9150/XPS 400 - Manual (Page 51)

Solving Problems
51
If the screen is difficult to read
T EST THE ELECTRICAL OUTLET — Ensure that the electrical outlet is working by testing it with another
device, such as a lamp.
C HECK THE DIAGNOSTIC LIGHTS — See page 53.
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 at least 60 cm (2 ft) 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 —
1 Click the Start button, click Control Panel, and then click Appearance and Themes.
2 Click Display and click the Settings tab.
3 Try different settings for Screen resolution and Color quality.