|Is this a new mouse or did you suddenly hit trouble?|
Way too simple probably, but presumably the mouse battery is OK and you been through any appropriate connect button ritual on the mouse and its transmitter/receiver.
Did you use any drivers supplied (or later ones from the supplier)?
One trick that sometimes works with devices is to find it in Device Manager, right click and do the Uninstall. This simply detaches the software from the mouse which is setup again when the system finds new hardware. Best avoid any "Software Uninstall" if it offer that. This process is quite different from a normal uninstall from the Control Panel.
Always pop back and let us know the outcome - thanks
message edited by Derek