With a wireless mouse/keyboard not working properly, or not at all, there are several trouble-shooting steps that may resolve your issues very quickly:

• • Battery: A wireless mouse requires batteries to power its communication with your computer, whether it’s using Bluetooth or USB connectivity. Check to be sure the batteries are inserted correctly, and that they’re not simply worn out. Fresh batteries are the cure for many wireless mouse problems.
  • Power switch: Many mouse devices have a switch on the bottom, so that you can turn them off and save your battery when not in use. Make sure that switch is set to ON, and if there is a power LED on the mouse, it should be illuminated.
  • Receiver: A USB mouse will require a small receiver that plugs into an available port on your laptop or desktop computer.  If the receiver is plugged in, and you’ve tried all other troubleshooting steps, try moving the receiver to a different USB port, if one is available. USB ports can go bad, making them unusable. If it doesn’t have a receiver, it may be a bluetooth mouse – in which case, check your bluetooth settings.
  • Software: Did you previously have another manufacturer’s mouse that included proprietary software to control it? There may be conflicts between your new mouse and old software. Try uninstalling any previous mouse-related software, then reinstall your new mouse.
    
    
• Outdated drivers: If your drivers for the mouse are not installed or out of date, your device may not work properly or may not connect.  In the event that you want to try reinstalling/updating your drivers, you can do this either via Device Manager or navigating directly to the manufacturers website.
  
  
• Try another computer: If your wireless mouse is still not working, try using it on another computer. That will tell you immediately if the problem lies within the computer talking to your mouse, or if the mouse functions properly on another system.