Toshiba PA3314U User Manual page 36

User's Manual
Monitor (analog external monitor/DVI monitor)
Refer also to your computer user's manual and to your monitor's documentation.
Problem
Monitor does not
turn on
No display
Display error occurs
5-6
Procedure
Make sure that the monitor's power switch is on.
Confirm that the external monitor's power cable is
plugged into a working power outlet.
Try adjusting the contrast and brightness controls
on the monitor.
Press hotkeys Fn + F5 to change the display
priority and make sure it is not set for the internal
display.
Check that the cable connecting the monitor to
the computer is attached firmly.
If problems persist, contact your dealer.