Dell Inspiron 1520 Owner's Manual page 85

Windows Vista
1 Click the Windows Vista Start button
click Appearance and Personalization.
2 Under Personalization, click Adjust Screen Resolution.
The Display Properties window appears.
3 Click Advanced.
4 Click the tab for your video card.
NOTICE:
the Windows Help and Support Center. To access the Help and Support
Center in Windows Vista, click the Windows Vista Start button
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.
To determine the type of video card installed in your computer, see
,
click Control Panel, and then
Using Multimedia
→ Help
85