Mouse acting erratically or is not moving properly
Mouse acting erratically or is not moving properly.
This issue can occur because of one of the below possibilities. These may vary depending upon the mouse you have connected to the computer.
- Mouse is not clean.
- Optical portion of mouse is blocked.
- Moisture or other material on finger.
Mouse is not clean
Users who have an optical mechanical mouse (most common mouse for desktop computers) are likely experiencing erratic behavior because the mouse is not clean or is dirty. Information on how to clean the mouse can be found on our cleaning page.
Optical portion of mouse is blocked
Users who have an optical mouse are likely experiencing erratic behavior because a portion of the optical eye is blocked. Most commonly this is caused by a hair.
Although most mice will work with any computer surface if you're having issues we suggest trying a different mouse pad, a book, piece of paper, or something different to verify it's not the surface causing your issue.
Moisture or other material on finger
Users who are using a touchpad may experience erratic behavior because of moisture or other material on the finger such as a lotion.
Disconnect other external input devices
It may not be the mouse that's causing your issue, if you have other input devices such as another external mouse, graphics tablet, keypad, etc. Try disconnecting these devices to make sure they're not the cause of your issue.
Update drivers and uninstall older drivers
Because the drivers control how the mouse interfaces with the operating system if the drivers contain issues any number of problems can occur including the cursor moving improperly. Make sure you have the latest drivers from your mouse manufacturer.
We also highly suggest that you go into Add/Remove programs and uninstall all previous installations of previous mouse drivers that have been installed on the computer. This is very important when moving between mouse manufacturers such as going from a Logitech mouse to a Microsoft mouse.
Mouse has been cleaned and still has problems
If you've cleaned the mouse and continue to encounter issues and this mouse has worked in the past fine unfortunately your mouse is likely defective. One additional test that can be done to help determine if this is the case or not is to connect the mouse to another computer. Otherwise we suggest replacing the mouse.