You can click to make this larger; what it shows is how many problems have been discovered (and gotten rid of) in a relatively short time by Avira, my free antivirus. Possibly if I could get Windows update to work, I wouldn't have so much trouble. But of course, Windows won't update.
Which is why I'm willing to try that Mac Mini. Soon. And although it's possible to install Windows on a Mac, I won't be doing that.