This application is infectious

One of the computers in your organization appears to have been infected with malware. Which of these steps should be done to help quarantine the infected system?

A) Back up the user’s documents to a central network drive and reimage the system

B) Set aside any USB flash drives for further analysis

C) Update your anti-virus and anti-malware signatures

D) Use a search engine to research the specific malware type and determine possible remediation options

E) Get a second opinion. May be the screen full of popup messages is completely normal.