Dell XPS 420, Owner'S Manual, Page: 91 / 226

Troubleshooting
91
Many drivers, such as the keyboard driver, come with your Microsoft
Windows operating system. You may need to install drivers if you:
• Upgrade your operating system.
• Reinstall your operating system.
• Connect or install a new device.
Identifying Drivers
If you experience a problem with any device, identify whether the driver is the
source of your problem and, if necessary, update the driver.
1
Click the Windows Vista Start button™ , and right-click Computer .
2
Click Properties
→
Device Manager .
NOTE:
The User Account Control window may appear. If you are an
administrator on the computer, click Continue ; otherwise, contact your
administrator to continue.
3
Scroll down the list to see if any device has an exclamation point (a yellow
circle with a [
!] ) on the device icon.
If an exclamation point is next to the device name, you may need to
reinstall the driver or install a new driver (see "Reinstalling Drivers and
Utilities" on page 91).
Reinstalling Drivers and Utilities
NOTICE:
The Dell Support website at support.dell.com and your
Drivers and
Utilities media provide approved drivers for Dell™ computers. If you install drivers
obtained from other sources, your computer might not work correctly.
Using Windows Device Driver Rollback
If a problem occurs on your computer after you install or update a driver, use
Windows Device Driver Rollback to replace the driver with the previously
installed version.
1
Click the Windows Vista Start button™ , and right-click Computer .
2
Click Properties
→
Device Manager .
NOTE:
The User Account Control window may appear. If you are an
administrator on the computer, click Continue ; otherwise, contact your
administrator to enter the Device Manager.
book.book Page 91 Tuesday, November 27, 2007 10:29 AM