Dell Latitude D820 - Manual (Page 47)

Volume Control Buttons
You can adjust the volume with the volume control buttons on your computer. See volume control buttons .
Adjusting the Picture
If an error message notifies you that the current resolution and color depth are using too much memory and preventing DVD playback, adjust the display
properties.
1. Click Start® Control Panel® Display.
2. Click Settings and click and drag the bar in Screen resolution to change the setting to 1024 by 768 pixels.
3. Click the drop-down menu under Color quality® Medium (16 bit)® OK.
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