Toshiba C850/C850D/L850/L850D ユーザーズマニュアル

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Problem
Procedure
Annoying sound is
heard
In this instance you may be experiencing feedback
from either the internal microphone or an external
microphone connected to the computer - please
refer to 
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 TOSHIBA Support.
External monitor
, and to the documentation
supplied with your monitor for further information.
Problem
Procedure
Monitor does not
turn on
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.
C850/C850D/L850/L850D
User's Manual
6-14