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Solving Display Problems
IMPORTANT: Conduct all tests on a working monitor. If the recommended actions do
not solve the problem, replace the display. If the problem persists with a new display,
replace the system board.
Problem
Characters are dim.
Screen is blank.
Computer screen is
blank and the screen on an
external monitor displays
information.
Screen is blank and the
power/suspend light is
blinking.
Screen is blank and the
power/suspend light and the
battery light are blinking.
Table 2-25
Solving Display Problems
Probable Cause
The brightness or contrast
control (if applicable) is not
set properly.
Computer screen is in direct
light.
Display is damaged.
QuickLock/QuickBlank was
initiated.
Screen save was
initiated after the Power
Management timeout period.
Brightness or contrast needs
adjusting.
Screen has overheated.
Display was switched to the
external monitor.
System initiated Suspend.
System has entered a critical
low-battery condition.
Recommended Action(s)
Adjust the control(s) with the hotkeys:
Fn+F9 and Fn+F10.
Tilt the display or move computer.
Replace the display.
Enter the password to exit
QuickLock/QuickBlank.
Press any key or click the mouse.
Adjust the control(s) with the hotkeys:
Fn+F9 and Fn+F10.
If computer is in direct sunlight, move it and
allow it to cool.
Press the Fn+F4 hotkeys to display
information on the computer screen.
Press the suspend button to exit Suspend.
Enter the power-on password if prompted.
Immediately connect the computer to an
external power source or replace the
battery pack.
Continued
Troubleshooting 2-31
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