First off, I am a PC green horn but I am making serious efforts to be up to speed. Bear with me.
Lately, I have seen two user accounts I did not create and are not part of the standard user accounts. I can't seem to get rid of them. My deal is that I am piggybacking, with permission, on someone else's internet access and I do feel this person is surreptitiously accessing my laptop. I am the only user and want to configure the laptop to prevent anybody else from accessing it. What's more, some services in my computer are password locked and I don't recall doing that. There are other issues I want to clear up but these are first.
I am attaching paintbrush screen prints of these problems in the hope that someone can help me with them. I trust I am not causing myself further harm by doing this. Advance thanks to whoever can help.