.  you might have to uninstall the mouse then restart your computer then reinstall the mouse and its driversclick start right click on my computer select properties device manager control scroll to mice and pointing devices you might see a yellow question mark? right update drivermake sure the battery is good (has full charge)also you might test the usb device for the mouse is inserted correctly into the usb port (if applicable)click start control panel mouse you should see 0 tabs buttons,pointers,pointer options and hardware 