Windows 10: jumping curser

I have been experiencing my curser jumping around on the pages. How do I fix this> I have an HP Laptop that I installed windows 10 on a couple of years ago, but this is a recent problem.

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windows 10 curser jumps, pages jumps help

I have a HP Envy 360 Laptop with Windows 10. I barely touch it and the curser jumps. I can't get curser to settle on a particular item. My pages jump without notice, while I am viewing one it jumps to another page. This is maddening! Can you
help please?

 

Curser keeps jumping all over the place

I have recently purchased an HP Pavilion computer and upgraded to windows 10. It ran really well for a while but now the curser jumps all over the place. Sometimes while typing and other times on its own. I don't have a touch pad so that is not the problem.
I have tried two different virus checkers including Nortons and Kerperski and no virus has shown up. I even started in safe mode and ran virus checkers and still no virus showed up. I have noted that the curser often goes to the bottom left screen and flashes
in some little circles which are opaque. Other times it opens thing up as it moves to the start menu and flashes. Can anyone give me suggestion how to fix this as it is really frustrating.

 

While typing on my laptop keyboard the curser jumps at random anywhere on my document

While typing on my laptop keyboard the curser jumps at random anywhere on my document deletes up to a whole paragraph of typed information and begins to type on the bottom of the pg where I am working - really annoying. Tried one of the suggestions on
here but it is still occurring.