Originally Posted by Chester the bunny

I had something similar happen where a screen popped up and a voice said something about the computer being frozen and to call the "Microsoft" phone number on the screen. Could not shut down the page, could not open any other page to see how to get rid of this. Called the number and got suspicious when the person wanted to access my computer so I hung up. Called the local computer company and was told it a scam.
So for the non computer savvy quilters out there (if there are others, other than me)
Push Ctrl/alt/delete
Select Task Manager
Select the internet/microsoft icon
Select end task