My problem looks like a virus or spyware. I have a red shield with a white x and my computer automatically directs me to a security scan "box" and starts scanning. Another box will come up with the typical three types of security currently running on my computer with the last one out of date or not working. When I access my wiindows security center from the control panel, everything looks fine. About every 5 minutes, my computer screen will go blue and in big font, "Windows has been shut down to protect your computer . . ." then, the page I was currently working on will reappear. What can I do to fix this problem?