To successfully clean any memory-resident virus, it is always advisable to boot your system with a clean boot disk. A clean boot disk is made on a system that is NOT infected, or else it is likely that the virus will infect your boot disk, defeating the purpose.
For more information on this topic, visit these other SearchSecurity resources:
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Virus Prevention Tip: Cleaning out a virus infection
Ask the Expert: Maintaining security after cleaning an infected system
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