The Windows XP shutdown sound comes from Microsoft's Windows XP operating system, which launched in 2001. Over time, the chime became a recognizable piece of computer audio for people who used XP at home, at school and at work. It spread online through nostalgia compilations, retro tech videos and memes about old PCs. Creators still use it because the sound is short, familiar and instantly communicates that something is ending, powering down or mentally checking out.