If the mouse is working in Safe Mode, there is likely a driver or software conflict. Software or driver conflictīoot into Windows Safe Mode. If the computer's keyboard works, shut down Windows properly by pressing the Windows key, and then using the arrow keys and Tab to select shut down. If the mouse has worked properly in the past (i.e., not a new mouse), shut down the computer and disconnect and reconnect the mouse. With a PS/2 mouse, check the back of the computer to verify that it's plugged into the PS/2 mouse port and not the PS/2 keyboard.

Disconnect the wireless USB adapter and try plugging it into a different port.

Make sure the wireless receiver is within range and is not blocked by too many objects.

If the mouse doesn't appear to be on, replace the batteries.

If your mouse has a power switch, it's often on the bottom side. Move your mouse around on the mousepad to see if any indicator comes on.

Make sure the wireless mouse is receiving power by checking for some indication of power (usually a light).

If the mouse connects to a USB hub, try connecting the mouse to a USB port on the back of the computer. If you are using a USB or cordless mouse, disconnect the mouse cable and reconnect to a different USB port. Mouse is not connected correctlyįollow these steps to verify the mouse is connected correctly to the computer. If any new hardware was recently installed on the computer, remove it to help verify the new hardware is not causing a conflict with your existing mouse.

Windows freezes or stops responding frequently.

Reboot your machine to resolve this issue. If you are not taken to the blue screen within a few seconds, your computer is frozen. This action should bring up a blue Windows options screen. If your keyboard does not include the LED described in the previous section, anywhere in Windows, press Ctrl+ Alt+ Del at the same time.

Keyboard doesn't have Num Lock indicator light If you don't have an indicator light, proceed to the next part of this section. Reboot the computer to resolve this issue. If this indicator does not change, your computer is frozen meaning all hardware on the computer (including the mouse) will not work.

When Num Lock is pressed repeatedly, the Num Lock indicator LED on your keyboard should turn on and off. Make sure the computer is not frozen by pressing Num Lock on the keyboard.

If your mouse pointer movement disappears, follow these steps to determine if your computer is completely frozen. When a computer freezes, the first sign is usually that the mouse has stopped responding on the monitor.

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