Sony VAIO PCG-GRS150 User Manual page 133

(Multiple Monitors) and Mobility Radeon Properties screen
3 Click the Displays tab and select the display settings by clicking the
icon on the panel of your display choice. For more information, click Help.
✍
If you cannot see your movie or DVD on the external display, change the monitor or TV
setting by clicking on the Secondary
✍
You may not be able to display the computer screen (LCD) and an external display or
projector at the same time, depending on the types of computer displays and
projectors you are using.
Turn on the computer after you connect the external display.
Using Computer Monitors and Projectors
icon and changing it to Primary .
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