One is a self-contained program that you have to install on a USB device or disc and then boot from it when your computer starts up. There are two types of bootable antivirus software. Tip: If you get viruses often, learn how you should be protecting your computer from hackers and malware. If you’re not familiar with this process, we’ll go over all the steps, including how to download the scanner and what to do next to have it run at startup instead of your operating system.
Below are the best ways to remove viruses before the operating system starts.