Question

A user reports that his macine will no longer boot properly. after asking several questions to determine the problem, you suspect the user unknowingly downloaded malware from the internet, and that the malware has infected the system

Answer 1

A malware is a software the capable to damage or disable computer programs. The user must reimage the machine or reprogram the system. It can be also boot from Windows installation and use the recovery environment to run a startup repair.