Toshiba 8000 series, User Manual

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Part I: Getting to Know Your Computer
Troubleshooting Guide
Fixing device-related problems
122
Display problems
The screen is blank.
Display Auto Off may have taken effect. Press any key to
reactivate the screen.
You may have activated the instant security feature by pressing
Fn
and
F1
simultaneously. Enter your user-level password if you
have registered one, or press
Enter
to return to work.
If you are using the built-in screen, try changing the display
priority to make sure it is not set for an external monitor. To do
this, press
Fn
and
F5
simultaneously.
If you are using an external monitor:
❖ Check that the monitor is turned on.
❖ Check that the monitor’s power cable is firmly plugged into a
working power outlet.
❖ Check that the cable connecting the external monitor to the
computer is firmly attached.
❖
Try adjusting the contrast and brightness controls on the
external monitor.
❖
Press
Fn
and
F5
simultaneously to make sure that the display
priority is not set for the built-in LCD screen.
The built-in screen flickers.
Some flickering is a normal result of the way the screen produces
colors. To reduce the amount of flickering, try using fewer colors.
Windows displays a message that there is a problem with
your display settings and that the adapter type is incorrect or
the current settings don’t work with your hardware.
Reduce the size of the color palette to one that is supported by the
computer’s internal display.