Click on Start and then Control Panel.
Click on the Performance and Maintenance link.
Note: If you're viewing the Classic View of Control Panel, you won't see this link. Simple double-click on the System icon and proceed to Step 4.
In the Performance and Maintenance window, click on the System icon near the bottom of the window.
In the System Properties window, click on the Hardware tab.
With the Hardware tab selected, click on the Device Manager button.