Sony PCG-VX88 - Manual (Page 87)

Selecting the Display Mode
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4 Click the Graphics Properties button.
5 Click the Device tab.
6 Select the type of display.
Intel® 82815 Graphics Controller Properties Screen
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You may not be able to display the computer LCD screen 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 turn on the peripheral devices.