Toshiba Satellite A210-10W User Manual page 125

Settings for audio on HDMI
To set the audio device to use the HDMI, follow the steps below.
1. Go to Start then select Control Panel.
2. Click Hardware and Sound then select Sound. If you are in control
panel classic view, select Sound directly.
3. In Sound window, select Digital Output Device (HDMI) then click Set
Default once.
Please follow above steps to change back to speakers after you plug out
HDMI connector.
User's Manual
Selecting Audio HDMI output
A210
8-13