To activate the mouse wheel
You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure. If your computer is connected to a network, network policy settings may also prevent you from completing this procedure.
Open Device Manager
Double-click Mice and other pointing devices, and then double-click the name of the mouse you want to configure.
On the Advanced Settings tab, in Wheel Detection, click Look for wheel.
To open Device Manager, click Start, and then click Control Panel. Click Performance and Maintenance, and then click System. On the Hardware tab, click Device Manager.
If Look for wheel is selected and the mouse wheel is not working, click Assume wheel is present.
A mouse wheel may work differently from program to program. For example, in a word processing program, you can rotate the wheel to move up or down the page, equivalent to using the PAGE UP or PAGE DOWN keys on your keyboard, or to clicking above or below the scroll bar.
If your mouse does not have a mouse wheel, the Advanced Options tab may not appear.