You need to ensure that the employees can use the scanner

All client computers on your company network were recently upgraded from Windows Vista to
windows 7. Several employees use a scanner to import document images into a database. They
install a new scanning application on their computers. The application updates the device driver for
the scanners as part of the installation process. Employees report that the application can no longer
connect to the scanner. You need to ensure that the employees can use the scanner. What should you do?

A.
Roll back the device driver to the previous version.

B.
Reinstall the application in Windows Vista compatibility mode.

C.
Set the application compatibility properties to run the application as an administrator.

D.
Restart the computer by using the System Configuration tool to load only basic devices and
services.

Explanation:
Chapter 1 Lesson 1 p 17
Appendix C p 485 / 486
Chapter 5 p 275 / 276

How to Roll Back to the Previous Version of a Device Driver:
Device Driver Roll Back reinstalls the driver you were using previously and restores any driver
settings that were changed when you added the new driver. To roll back a device driver to a
previous version:
Log on to the computer by using an account with administrative privileges.
Click Start, and then click Control Panel.
Under Pick a category, click Performance and Maintenance.
Under or pick a Control Panel icon, click System.
On the Hardware tab, click Device Manager.
In the device list, expand the device type branch that you want to work with. For example, Display
adapters.
Right-click the device that you want to work with, and then click Properties.
On the Driver tab, click Roll Back Driver. Click Yes when you receive the following message:
Are you sure you would like to roll back to the previous driver?
The previous device driver is restored. Click Close.
10. Quit Device Manager, and then click OK.
Note: that you cannot restore printer drivers with Device Driver Roll Back.
Driver Roll Back only allows you to roll back a driver once. In other words, Windows 7 only keeps a
copy of the very last driver installed. It does not keep an archive of all previously installed drivers for the device.
http://pcsupport.about.com/od/windows7/ht/roll-back-driver-windows-7.htm