Thank you patio and Allen. Actually I couldn't get to a a specific place within control panel because as I moved to click on one thing so many other pages and windows opened. Finally I decided to just shut the computer down and let it rest (is that even a thing?). Anyway, I turned it back on a while later and that particular problem was gone. I also deleted a lot of downloads so that room was cleared on my hard.
Still, when this was happening I had the sense that I was under attack. I mean, why did this happen all of a sudden when I hadn't changed those setting you both referred to?
Whatever it is, it's over, for now.
Thanks again.