Mouse not being detected or working in Windows
There may be several issues which can cause your mouse to not work properly with Microsoft Windows. This document contains possible solutions that should be followed in order for best results.
Note: If you are having trouble with a touchpad mouse on a laptop, see our laptop touchpad not working page.
Using the Num Lock key
Make sure the computer is not frozen by pressing the Num Lock key on the keyboard. When Num Lock is pressed repeatedly, the Num Lock indicator LED on your keyboard should turn on and off. If this indicator does not change, your computer is frozen; meaning all hardware on the computer (including the mouse) will not work. Reboot the computer to resolve this issue. If you don't have an indicator light, proceed to the next part of this section.
Keyboard doesn't have Num Lock indicator light
If your keyboard does not include the LED described in the previous section, anywhere in Windows, press the Ctrl+Alt+Del keys at the same time. This action should bring up a blue Windows options screen (you may leave this menu by pressing the Esc key). If you are not taken to the blue screen within a few seconds, your computer is frozen. Reboot your machine to resolve this issue.
If any new hardware has been recently installed on the computer, remove it to help verify the new hardware is not causing a conflict with your existing mouse.
Not connected properly
If you are using a USB mouse, disconnect the mouse cable and then reconnect to a different USB port. If the mouse is connected to a USB hub, unplug the mouse cable and the connect it to a USB port on the back of the computer.
If you are using a mouse with a PS/2 connection, check the back of the computer to verify that it is plugged into the PS/2 mouse port and not the PS/2 keyboard. If the mouse has worked properly in the past (I.E. this is not a new mouse), turn off the computer, then disconnect and reconnect the mouse.
Note: A PS/2 mouse should not be disconnected and reconnected while a computer is turned on.
- Make sure the mouse is receiving power by checking for some indication of power (usually a light). If your mouse has a power switch, it is often located on the bottom side.
- If the mouse does not appear to be on, replace the batteries.
- Make sure the wireless receiver is within range and is not blocked by another object.
- Disconnect the wireless USB adapter and try plugging it into a different port.
Mouse software or driver conflict
- Open Windows Device Manager.
- Expand the mouse (mice) option in Device Manager by clicking the + symbol.
- Remove all mice listed by highlighting each device and then pressing the Delete key on the keyboard.
If the mouse still does not work in Normal Windows, follow the basic troubleshooting steps for your version of Windows.
If the previous solutions did not solve the problem, try another mouse. If that mouse works, try the mouse that is not working with another computer. If multiple mice do not work, the likely issue is the port you are connecting the mouse to. If you are using the PS/2 or USB port on the back of the computer, the motherboard is potentially bad and would need to be replaced.
If the mouse does not work with more than one computer, the mouse is bad and should be replaced. If you are using a wired mouse, check the mouse wire. If the wire has been partially cut or is frayed, this is likely the cause of the mouse not working. Replace the mouse if this is the case.