Yesterday I felt the same way! I was ready to toss my computer...then I noticed that my Norton Antivirus had expired. So, I renewed it, but I renewed it with a different package "Norton Internet Security." This contains the antivirus software and it blocks pop-ups and notifies you whenever someone tries to access your computer's information. It's pretty good, a little pricey. But if you have Norton already on your computer, you can upgrade for $30 or so. I have no complaints with it, yet
Good luck with everything.