50 Years Ago When Harold Wilson Was In...
ChatterBank3 mins ago
No best answer has yet been selected by pattylou. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.Do not follow gen2s advice if it is a ps2 fitting as these are not hot-swappable, only do so if it is USB.
If it is the old-fashioned type with a ball, follow jokos advice, if it is a modern optical advice it is probably corrupted drivers.
I have even found updating the graphics card drivers can resolve some optical mouse problems.