Hold the button down for at least four seconds. Locate the oval-shaped reset button on the bottom of the mouse and press it down. Turn the mouse upside down in your hand and slide the cover off to replace the battery. If the power is low, replace the 1 AA battery. Look for a small light on the top of the mouse to check the battery first. If the mouse stops working, start with a check of the battery. How do I pair Logitech mouse without Connect button?.Should you turn off a wireless mouse when not in use?.How do I fix an unresponsive wireless mouse?.Why is the left side of my mouse not working?.Why isn’t my left click working on my mouse?.How do you take apart a Logitech mouse to clean it?.How do you take apart a Logitech m330 mouse?.How do I connect my Logitech USB receiver?.