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My Logitech M221 wireless mouse is not working, please tell me how to fix it.
Usually the switches are the Point of Failure on mice. The switches are made of a small box with a small flange of brass/copper that gets flexed by a plastic plunger when you press the button. Over time, the flange will wear out. The simplest way is to replace the switch. Logitech has been using Omron brand switches for decades, so they are quite easy to source. These are the ones used in every logitech mouse I have ever opened, but they may use others. https://www.amazon.com/D2FC-F-7N-Switch-… The coding painted on the side can tell you the exact model. What could differ between models? The pressure needed to click The travel distance of the click The rebound, or bounce back after the click. This can all be found in datasheets for the part.
My mouse fell down n the floor and stopped left-clicking. I slapped it a few times and it miraculously started working. Maybe try that