The Windows XP startup sound comes from Microsoft's Windows XP operating system, released in 2001. It became one of the most recognizable computer boot sounds because XP was used widely at home, in schools and in offices for years. Online, the chime spread through nostalgia videos, PC history compilations and memes about old computers and internet culture. It still gets used because the sound is brief, unmistakable and strongly tied to a specific era of everyday computing.