MCSA/MCSE Self-Paced Training Kit (Exam 70-270): Installing ...

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dows will recognize the device when the computer restarts. Non–Plug and Play
devices require manual reinstallation.
■ Revert to a previous version of a driver by clicking the Roll Back Driver button.
This feature restores the last device driver that was functioning before the current
driver was installed. Windows supports driver rollback for all devices except printers.
In addition, driver rollback is available only on devices that have had new
drivers installed. When a driver is updated, the previous version is stored in the
%systemroot%\system32\reinstallbackups folder.
■ Remove the device from the computer by clicking the Uninstall button.
Security Alert To work with device drivers, your user account must have the Load And
Unload Device Drivers user right.
Figure 6-10 Use the Driver tab of a device’s Properties dialog box to view driver details.
Exam Tip You should consider rolling back a driver when you are sure that a new driver is
causing a problem and you do not want to affect other system configurations or drivers with a
tool such as System Restore.
How to Configure and Monitor Driver Signing
Lesson 4 Configuring and Troubleshooting Device Drivers
Hardware drivers can often cause a computer running Windows XP to become unstable
or to fail entirely. Windows XP implements driver signing as a method to reduce
the likelihood of such problems. Driver signing allows Windows XP to identify drivers
that have passed all Windows Hardware Quality Labs (WHQL) tests, and have not been
altered or overwritten by any program’s installation process.