Disconnect from the internet
Open Windows Security or your antivirus app
Run a full system scan
Run an offline scan if available
Check for suspicious startup programs
Review installed apps for anything unfamiliar
Check Task Manager for unusual processes
Look for high CPU, disk, or network usage
Scan downloads, USB drives, and external devices
Update Windows and your antivirus definitions
Run a second-opinion malware scanner
Check browser extensions for unknown add-ons
Inspect scheduled tasks for suspicious entries
Review recent files and changes for anything unexpected
Quarantine or remove any threats found
Change important passwords from a clean device
Back up important files after confirming they are safe