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On Vista OS :
1. Click to open
Windows Mobility
Center
from
Start
2. On the
Volume
title, click the
Change Audio setting
icon to open
Sound
page
3. Select
HDMI output
and press
OK
On Windows XP OS :
1. Click to open Audio setting from Control panel
2. Select
HDMI Output
and Press
OK
Note:
For more information, please type “change audio settings” on “Windows Help and Support”.