Now something claiming to be a virus scanner takes over the computer and I can't get rid of it. Since we did not install any new virus scanner, I'm assuming this is a fake virus scanner. I pops up windows that we can't get rid of, and they stay on top so that I can't see the windows of other apps we want to run. I even tried to open the Windows Task Manager to close the windows, but the Task Manager won't open. It's as if something (this fake virus scanner) is killing the task manager before it can start.
Anyway, we would greatly appreciate your help. Here's the link to my original post.