Two weeks ago I had to wipe out my hard drive to get rid of anit-virus-1. Yesterday, all the same, annoying pop-up windows that looked exactly like the windows that were popping up when I had anti-virus-1 on my computer (the only difference this time is the boraders of the pop-ups were red instead of blue and they said anitvirus 360 instead of anti-virus-1) started popping up. And once again it completely took over the operation of my computer. It wouldn't even allow Malwarebytes to open at all. So once again I had to completely wipe out my hard drive and reinstall windows. Where are these viruses coming from, how do they keep ending up on my computer, and what do I need to do to prevent getting them?