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326 Solving Problems
If the screen is difficult to read
CHECK THE MONITOR POWER LIGHT — If the power light is off, firmly press the button to ensure that
the monitor is turned on. If the power light is lit or blinking, the monitor has power. If the power light is
blinking, press a key on the keyboard or move the mouse.
TEST THE ELECTRICAL OUTLET — Ensure that the electrical outlet is working by testing it with
another device, such as a lamp.
TEST THE MONITOR — Connect a properly working monitor to the computer, and try using the
monitor. If the new monitor works, the original monitor is faulty.
CHECK THE DIAGNOSTIC LIGHTS — See "Diagnostic Lights" on page 330.
CHECK THE CARD SETTING — Enter system setup (see "System Setup" on page 257) and ensure that
Primary Video option is set correctly. Exit system setup and restart your computer.
RUN THE MONITOR SELF-TEST — Check the monitor documentation for more information.
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.
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.
ADJUST THE WINDOWS 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.