- 1). Buy an antivirus software program. According to Top Ten Reviews, some of the best rated antivirus programs include Bit Defender, Kaspersky, Webroot and Norton. You can purchase all these programs from their vendors' websites (see Resources).
If you don't want to purchase an antivirus program, you can try a free program like AVG, Panda Cloud or Avast. These are available for free downloads from CNET's website (see the second link in Resources). - 2). Install the antivirus program on the computer. If you have downloaded the set-up file from the Internet, run this file and follow the installation instructions to complete installation. If you have bought the software's CD, insert the CD into computer's disk drive. The computer screen will prompt you to follow installation instructions.
- 3). Download a file on the computer. You must check each file whether you downloaded it from the Internet or a memory device such as a flash drive, memory card or USB camera. Checking for viruses is crucial before opening the file in question. Before you open the file, right-click on the file icon and click "Scan." Usually, you will see an option like "Scan with Panda" or "Scan with Norton" (depending on the program you have installed).
The antivirus program will then scan the file for potential viruses. If it's clean, the program will give you a go-ahead, but if it finds malicious content, it will give you a warning. If you get a warning, it is better not to run the file and to delete it without opening. Some programs automatically remove the particular file from the system after they find something suspicious in it.
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