Windows XP launched from Microsoft in 2001 and became one of the most widely used PC operating systems of its era, so its short startup melody was heard daily in homes, schools and offices. As XP aged and was replaced, recordings of the chime circulated online in compressed, low quality forms, often reposted for memes and edits. It now sits alongside the Windows error sound in collections of nostalgic system noises, valued less for fidelity than for instantly signalling an old, struggling computer and early 2000s internet culture.