The same thing happened to me, I haven’t used my laptop in 2 weeks and haven’t downloaded anything new in months but I turned iton today and “avast” opens up on the screen as soon as I log in and opened an internet explorer browser before I could even type anything. I’ve never heard of this program and it looks like a virus, how did it download to my computer?!
And before the same smart ass dude says it can’t download itself again, it apparently did since no one but myself lives in my house or uses this laptop. So genius how did it get there?!