A computer at work has become infected with malware. After several attempts to remove the malware using a professional anti-malware tool you find the malicious software is not fully removed. What should you do next?
The next logical step here is to restore the computer to a known-good backup. You can try to determine what backups are available compared to when the malware was first discovered. If no backups are available or no backups before the infection are available reformatting the PC is an acceptable last resort.