Toshiba TECRA R700 User Manual page 171

Problem
Annoying sound is
heard
External monitor
Please also refer to chapter 3,
documentation supplied with your monitor for further information.
Problem
Monitor does not turn
on
No display
User's Manual
Procedure
In this instance you may be experiencing feedback
from either the internal microphone or an external
microphone connected to the computer - please
refer to Sound System
Basics for further information.
Volume cannot be adjusted during Windows start
up or shut down.
If you are still unable to resolve the problem,
contact your reseller, dealer or service provider.
Hardware, Utilities and
Procedure
After confirming that the monitor's power switch is
on, you should check the connections to make sure
that the power cord/adaptor is firmly connected to
the monitor and to a working power outlet.
Try adjusting the contrast and brightness controls
on the external monitor.
Press the FN + F5 hot key in order to change the
display priority and ensure that it is not set for the
internal display only.
Check to see if the external monitor is connected.
When the external monitor is set as the primary
display device in extended desktop mode, it will not
display when the computer wakes up from Sleep
Mode if the external monitor has been disconnected
while in Sleep Mode.
To keep this from happening, do not disconnect the
external monitor while the computer is in Sleep or
Hibernation Mode.
Remember to turn off the computer before
disconnecting the external monitor.
When the display panel and an external monitor are
set to clone mode and they are turned off by the
timer, the display panel or the external monitor may
not display when turned on again.
If this occurs, press FN + F5 to re-set the display
panel and external monitor to clone mode.
PORTÉGÉ/TECRA R700 Series
in chapter 4, Operating
Options, and to the
8-18