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Troubleshooting 105
RUN THE VIDEO DIAGNOSTICS TESTS—
If no error message appears and you still have a display problem, but
the display is not completely blank, run the
Video
device group in the Dell Diagnostics. If the
problem persists, contact Dell (see "Obtaining Assistance" on page 159).
SEE "ERROR MESSAGES"—
If an error message appears, see "Error Messages" on page 90.
If only part of the display is readable
CONNECT AN EXTERNAL MONITOR—
1
Shut down your computer and connect an external monitor to the computer.
2
Turn on the computer and the monitor and adjust the monitor brightness and contrast
controls.
If the external monitor works, the computer display or video controller may be defective. Contact
Dell (see "Obtaining Assistance" on page 159).