: Some fake antivirus clones override the "shell" registry key to launch themselves instead of the Windows interface. You can check this in regedit under Software\Microsoft\Windows NT\CurrentVersion\Winlogon and ensure the "Shell" value is set to explorer.exe .
: Apply all pending Windows and application updates to patch the vulnerabilities that allowed the initial infection. : Some fake antivirus clones override the "shell"
: Use reputable tools such as Malwarebytes or Kaspersky to perform a deep scan. 4. Advanced Manual Cleanup (If Necessary) : Use reputable tools such as Malwarebytes or
If these steps do not resolve the issue, you may need to entirely to ensure every trace of the malware is gone. : Download this free tool on a clean
: Download this free tool on a clean computer and run it from a USB drive if your infected PC cannot access the web.
If the "Cyber Security" window persists or prevents you from running scanners, you may need to reset system values:
: Once the system is clean, change passwords for all major accounts and enable multi-factor authentication (MFA) .