Dell Vostro 1700 Owner's Manual page 83

4 Click the tab for your video card.
NOTE:
To determine the type of video card installed in your computer, see
Windows Help and Support. To access Help and Support, click Start
and Support. Under Pick a Task, click Use Tools to view your computer information
and diagnose problems. Then, under My Computer Information, select Hardware.
5 In the display devices section, select the appropriate option for using
either a single display or multiple displays, ensuring that the display
settings are correct for your selection.
Using Multimedia
→
Help
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