Remove the four screws from the bottom casing of the track ball. Carefully push the ball from the topside causing the case to come apart. Remove the ball and take an alcohol wipe and gently clean the area where the ball sits and the optical eye that the ball rest against...it looks like a little window that is on the side of the area in which the ball rest in. Put ball back in the recess and put case back together. Replace screws and you should be good to go!
Remove the jack of the mouse and plug it agin.then restat the system and if it si not working even then there is aproblem with the mouse
Press the button on the back of the mouse to free the battery cover on top.
Remove the battery cover and put the supplied AA battery into the mouse.
Replace the battery cover.
Insert the wireless USB dongle into a USB port on the laptop or desktop computer.
Move the mouse and watch your computer screen.
Confirm that the mouse is connected by making the cursor move.
Hope this helps
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