SWAP THE POWER CABLES — Swap the computer and monitor power cables to determine if the power cable is defective.
TEST THE VIDEO EXTENSION CABLE (IF USED) — If you are using a video extension cable and removing the cable solves the problem, the cable is defective.
TEST ANOTHER MONITOR — If another monitor is available, connect it to the computer.
CHECK THE DIAGNOSTIC LIGHTS — See page 48.
If the screen is difficult to read
CHECK THE MONITOR SETTINGS — See the monitor documentation for instructions on adjusting the contrast and brightness, demagnetizing (degaussing) the monitor, and running the monitor
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.
Solving Problems
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