Cursor does not follow MK120 mouse movements

Clean your MK120 mouse sensor (shown below) with a soft cloth or a Q-tip.

Try using your mouse on a piece of clean white paper to see if the surface may be the cause. If the mouse works well on the paper, use a mouse pad and avoid using your mouse on the following surfaces:

• Glass or other transparent surfaces

• Mirrors, metals or other reflective surfaces

• Grained wood or other grooved surfaces.

Additional Information:

If the above solutions do not resolve your problem, you can contact Logitech Technical Support Here.