Dell Precision T5400 (Late 2007) - Manual (Page 142)

142 Reinstalling Software
2 Under Pick a Category, click Performance and Maintenance, and click
System.
3 In the System Properties window, click the Hardware tab, and click Device
Manager.
Microsoft Windows Vista™
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.
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 142).
Reinstalling Drivers and Utilities
NOTICE: The Dell Support website at support.dell.com and your Drivers and
Utilities
disc 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.
Windows XP:
1 Click Start→ My Computer→ Properties→ Hardware→ Device Manager.
2 Right-click the device for which the new driver was installed and click
Properties.
3 Click the Drivers tab→ Roll Back Driver.
Windows Vista:
1 Click the Windows Vista start button , and right-click Computer.
2 Click Properties→ Device Manager.