Why is my mouse pointer moving on its own?

Solution 1:

What surface are they on? Cheap optical mice can really be thrown off on some surfaces.

Solution 2:

I have solved the problem. I am explaining what I did, for the record. Hope this helps someone else. I don't know exactly what step did solve the problem, anyway, here is the complete things I did.

I first changed different settings in mouse control panel. I set a lower pointer speed and disabled the enhanced pointer precision setting. And I disa bled the device.

I restarted the PC.

After restarting, I enabled the device back.

Now the mouse works correctly. Although its speed is a little lower.