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If your mouse is optical, the surface it is running on may not be reflective in the proper manner to stimulate the optical sensors in the mouse, enough for it to sense movement.
Or, your move may possibly be clogged with dust? if you have a powerful blower, turn the mouse upside down, and blow air into it. (If it is 'air in a can', then be sure the computer is Off and the mouse unplugged/disconnected, first.) Into it meaning specifically into the area where the LED lights are (turn it upside down before unplugging it or turning the computer Off, to see where that is for sure.)
Cleaning might help. Also using a standard mousepad instead of just any surface.
I fear that you may not have received notice of my answer to your question, which I provided, according to the datestamp, as of
23 Dec 2015, 11:44 PM