Windows XP was Microsoft's operating system released in 2001, and its short startup chime became one of the most recognisable sounds of personal computing in that decade. As XP remained in homes, schools and offices for many years, the chime became tied to a whole generation's first experience of a computer. Long after newer systems replaced it, clips of the sound spread through nostalgia videos, retro tech edits and meme soundboards, where it now works as instant shorthand for the early internet era.