2. The issue is not now and the causes are far too many.
When I see this on laptops I disable the pad and use an external and scan the machine for malware with Grif's help at http://www.cnet.com/forums/discussions/how-to-remove-pup-option-603542/#post-f742c795-5881-433b-a29b-6d758efe5cd3
If a factory restore doesn't clear it up, then it's a hardware issue and the maker is called for repair.
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