Disconnect the PC from the internet
Restart the PC in Safe Mode
Run a full scan with Windows Security or your antivirus
Update the antivirus definitions before scanning
Quarantine or remove any detected threats
Run a second scan with a reputable anti-malware tool
Uninstall suspicious programs from Apps and Features
Remove unknown browser extensions and reset browser settings
Delete temporary files with Disk Cleanup or Storage settings
Check startup apps and disable suspicious entries
Run Windows Update and install all security patches
Change passwords after the PC is clean
Back up important files only after confirming they are safe
Restore the PC from a clean backup if needed
Use System Restore if the infection started recently
Reset Windows if the virus cannot be removed
Reinstall Windows as a last resort