It sounds like you're infected. Run a full virus scan. Get a copy of malwarebytes if you don't already have it.
I've run a virus scan and it comes back clean, nothing is showing up.
This is a desktop PC I use it just to cyle my wallpapers, I enjoy looking at them. It's updated with windows & virus, not sure why the windows box appears in the middle of screen, like I said its a box that gives the above 3 options. I've also checked the monitor setting to always stay on, it's annoying more than anything else.