The solution: cut a thin but non-flexible plastic sheet to cover the touchpad. Unwanted cursor moves (and the touchpad) covered.
Respectful greetings to members. My Dell Inspiron 7720 got Windows 10. Can't set up the touchpad properties, it works - I think at maximum sensitivity - and ruins my work by moving the cursor randomly. I would like to deactivate the touchpad but can't.  Read tons of posts in this community, Dell's official communications, watched many videos but coudln't find answer to my problem. All I need is touchpad not ruining my work. Thank you for your help.
Can't deactivate touchpad on Inspiron 7720 Windows 10