This sound comes from Microsoft Windows 7, released in 2009, where it played during system shutdown. Over time it became a recognizable piece of everyday computer audio for a generation of users. As Windows 7 aged into a nostalgia object, the shutdown chime spread through meme edits, retro tech videos, and social posts about old PCs. It remains popular because the sound is brief, unmistakable, and easy to use as an audio cue for endings, failures, and digital burnout alongside other classic PC noises like an error sound.