My daughter clicked on a pop up on our PC -- she thought it was because the AVG antivirus was alerting her, but then she immediately realized something was wrong. I had not yet installed the Malwarebytes software, so I managed to get downloaded with the "Security Tool" pop ups kept coming, blocking the view of the screen. Then the blue screen, and the computer shut down. I am ticked off at myself because I have been too busy to backup the files on that computer, but that's not the issue now -- how do we get rid of this "Security Tool" malware?