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.
Help, my PC with Windows 10 won't shut down properly
Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?