A user calls the help desk to report that none of the files on a PC will open. The user also indicates a program on the desktop is requesting payment in exchang...

A user calls the help desk to report that none of the files on a PC will open. The user also indicates a program on the desktop is requesting payment in exchange for file access. A technician verifies the user's PC is infected with ransomware. Which of the following should the technician do FIRST?