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8-20 User’s Manual
PORTÉGÉ M780
Sound system
In addition to the information in this section, please also refer to the
documentation supplied with your audio device.
Volume control dial
Problem Procedure
No sound is heard Adjust the volume control dial.
Check the software volume settings.
Please check to see if Mute is turned to Off
Check to make sure the headphone connection
is secure.
Check within the Windows Device Manager
application to ensure the sound device is
enabled and that the device is properly working.
For further information, please refer to
“Troubleshooting in Windows” section of
Windows Help and Support.
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 Sound System in
Chapter 4, Operating Basics, for further
information.
If you are still unable to resolve the problem,
contact your reseller, dealer or service provider.
Problem Procedure
No sound is heard Adjust the volume control dial.
To increase the volume move the volume control
dial to the right, and to decrease it move the
volume control dial to the left.
Turn the volume control dial while verifying the
volume in order to adjust.
Annoying sound is
heard
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.