How do I scan or check for computer viruses?

The best method to check if a computer is infected with one or more computer viruses is to use an anti-virus program. There are many different programs to choose from, but the better rated brands are Kaspersky, McAfee, Norton, Trend Micro, MSE, and Webroot. You can get just the basic anti-virus program or a full anti-virus suite, which often include other types of protection beyond anti-virus. See the additional information section at the bottom of the page for a list of anti-virus programs.

Each anti-virus program has a different user interface, but they typically make a Scan option/button readily visible. Clicking the button should begin the process. You may be prompted with a few choices before the scan begins, including the option for both a quick and full scan. A quick scan searchs the most common areas where viruses are located on your computer and takes less time than the full option. In spite the longer time it takes, a full scan is a better choice as it ensures the program checks all possible places on your computer for viruses.

Upon completion, the anti-virus program displays the results of the scan and let you know if any viruses were found. If the program has not already done so, it should ask if you want to proceed with removing the viruses. After the virus removal has completed, it is recommended that you restart your computer.

Most anti-virus programs provide an option for you to schedule virus scans, so that the program runs at a selected time each day, week or month. They also provide active virus protection, which means it checks any downloaded files or e-mails for signs of infection and warns you if it detects a possible virus.