I was researching stuff for my skating homework and as I opened a new page my headphones were playing in my head that I had a virus so I needed to call a number. I didn't call the number because it was fake (I could tell). The voice wouldn't stop talking so I logged off. Now when I turned my computer back on the only thing that I can see on the screen is my mouse pointer and nothing is happening!!! The voice also started speaking again. HELP!!!!