If you guys are still having problems I have a solution that worked for me. If your mouse is not connected to a usb port and is connected to the mouse port this will help. Start up Windows. Uninstall the keyboard by using the device manager to uninstall it for you. This will cause Windows to recognize the keyboard and the mouse. Shut down your computer. Remove the mouse from the mouse port and plug it into a usb port. Start up Windows again. Everything should work.