An antivirus program on your computer is necessary for stopping and disabling malicious software such as viruses. Your antivirus program has always automatically protected against viruses, but you can also have your computer checked yourself. That is how it works.
Do you notice that your computer is behaving strangely? Then it is always good to have the computer scanned for viruses. There are several antivirus programs available, but what they have in common is that you can scan them all for viruses as shown in the video below.
Extra tip: You can open your antivirus program through the Windows security window, but there is also a faster route. You just need to know which icon belongs to your antivirus program. You can see how you see and do this in this video. Note that the antivirus program name and icon on your computer may be different. Also, the texts on the buttons are sometimes a bit different than in the video.