Windows 7 & Vista:
1.Go to the Start menu.
2.Select Control Panel.
3.Switch to Classic View if you are in Category View
4.Select System.
5.Select Hardware tab.
6.Select Device Manager
7.Double Click on Human Interface Devices
8.Locate the USB Human Interface Device with a ! in the icon.
9.Click on Update Driver
10.Follow instructions.
If Windows 7 or Vista fails to find the driver on the computer's hard disk, you may have to insert and point to the original Windows 7 or Vista