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Question:

Which of the following should the technician carry out NEXT to solve the case that for the past month a user's personal laptop has been behaving erratically and today, however, the user cannot carry out, take any work on the laptop, as the device locks up immediately after logging on; believing the issue to be a malware infection, a technician takes the laptop back to the workbench for additional tests and diagnostics; a full-system malware scan returns inconclusive results. following best-practice methodologies, the user reports only new software installations have been made to the laptop?

A Do a full backup of the system data
Explaination