Recognize the window shown above (or one of the many like it)? They are scams. (You can't call Microsoft techs....) It's just a web page designed to look like a Windows problem and they are created to get you to call their number and then convince you that you have a laundry list of security problems. Please don't listen. THEY are the problem! Just shut down your web browser (Chrome, Internet Explorer, etc.) and restart it. If the program won't close then shut down your computer using the Start button (lower left corner), and if your computer is locked up and won't shut down (they can do that with malicious scripting) then just hold the power button in for six seconds or longer and your machine will shut down. Count to ten and start it up again. You should be good to go.
If you need help or have questions, please feel free to give us a shout.