Dell PP22L Laptop User Manual


 
Troubleshooting 129
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
Start
, and then right-click
Computer
.
2
Click
Properties
, and then click
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 of devices and check for an exclamation point (a circle with a
[
!]
) next to the device name
. 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 129).
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
Start
, and then right-click
Computer
.
2
Click
Properties
, and then click
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.