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