Re the grey box, I meant to refer to a discussion about this very annoyance. See There is this blue arrow in a box
Apparently this damned thing can be blue as well and seems to be mouse related. No help really, because, as frequently occurs for me, my Control Panel headings and contents don't match those of the poster or posters. At least with a Mac you get one OS, or I assume you do. Who's to blame: MS or OEM? It's a curse.
The cursor jumping around occurred with both Sony and MS mouses, so have switched back to Sony.
I will try to look today for possible updated driver for Sony mouse. Will be out and about, as I was yesterday.
Welcome lehnerus2000. I have turned off remote assistance. Had to turn it on several months ago and forgot to turn it off again!! Won't stop the grey box, but might stop the frequent bursts on the screen. No it hasn't! So what are these damned things?