In most screen recording software, capturing the computer audio is set by default. Thanks to this, you will not have to fumble with options to enable audio capture as well. If you do not want to include computer audio in your recording, there are two ways to do this. Depending on the software you are using, it may have an option to disable the computer sounds while recording. The end result will be a completely silent video. If the software does not provide that option, you will have to edit out the audio from your video.