Help! Possible Virus

Hello, a friend of mine Mac laptop behaving very weird. She explained that she using a Word doc for about 20 minutes and then this happened:


Now, when her computer is barely moving. When she tried to go to Finder -> Documents it said something to the effect that she doesn't have permission to access that folder.

Anyone ever seen this before? In case the picture is too blurry that is a folder with a little red circle with a white line across it and a button with a 'u' inside a circle button