1. You could have used the mouse on a rough surface and it could have messed up the laser on the mouse messing up the connection.
2. If you have a Bluetooth mouse it can be the USB or the Bluetooth and if its the Bluetooth you need to replace the mouse and if its the USB try connecting it to another USB.
3. If your mouse is always right clicking then the the button that you press could be dirty or sticky and it is always being pressed down without you pressing it. This is a problem because if you are playing a game and this happens it causes you to always attack.
4. If your mouse is not working You might need to change the USB port that it is connected to because sometimes cords do not work with certain USB ports. The USB does not connect to certain things sometimes
5. It could also be that the mouse has outdated software. With outdated software you will either need to get the software updated or buy a new mouse. Outdated software is usually in mouses from many years ago.
