• Mouse is not working
• Mouse frequently stops working

If your mouse isn't working, the problem is likely a lost connection. The connection between the mouse and the USB receiver can be lost for several reasons, such as:

• Low batteries.
• Moving the USB receiver from one port to another.
• Moving the USB receiver to another computer.
• Plugging the USB receiver into a hub or other unsupported device such as a KVM switch (your Unifying USB receiver must be plugged directly into your computer).
• Using your cordless mouse on metal surfaces.

• Radio frequency (RF) interference from more powerful devices such as:

  • Wireless speakers
  • Computer power supplies
  • Monitors
  • Cell phones
  • Garage door openers

Before connecting your M315/M235:

1. Fix or rule out the potential problems listed above.

2. Turn your computer on.

3. Insert fresh batteries in your mouse. For instructions on changing your mouse battery, see Knowledge Base article 23043.

4. Turn on your mouse. The power indicator on top should be green.

   

5. If the power indicator is not illuminated, move the power switch on the bottom of the mouse to the "ON" position. The power indicator should now turn green.

   

6. Plug the USB receiver directly and securely into a working USB port on your computer.

Re-connecting your M315/M235:

1. Download the correct version of the Logitech SetPoint mouse and keyboard software from the M315/M235 Downloads page.

2. Press the Windows key with the up arrow to Run.

3. Type C:\Program Files\Logitech\SetPointP\ConnectUtility.exe and press Enter.

4. Follow the instructions displayed in the following window:

   

5. Confirm the connection by clicking 'Yes' and then click Next.

   

6. If your device is not connected, select "No" and then click Next to try connecting the device again. When the re-connection succeeds, you'll see the following window:

   

7. Click Finish.

If this solution doesn't work after a couple of attempts, restart your computer and try the reconnection process again.

If your mouse frequently stops working and you keep having to reconnect it with the USB receiver, try these suggestions:

• Keep other electrical devices at least 8 inches (20 cm) away from the USB receiver

• Move the mouse or keyboard closer to the USB receiver

• Move the receiver to a different USB port on your computer

Contact information

Need help? See Knowledge Base article 23041 for how to contact Logitech Customer Care about this product.