Choose a trusted antivirus program
Go to the official website of the antivirus provider
Download the installer for your laptop’s operating system
Open the downloaded file
Allow the app to make changes if prompted
Follow the on-screen installation steps
Accept the license agreement if required
Choose the installation settings if available
Wait for the installation to complete
Restart your laptop if prompted
Open the antivirus program
Update the antivirus definitions
Run a full system scan
Enable real-time protection
Set up automatic updates if available