Microsoft released Windows XP in 2001, and its startup sound quickly became one of the most recognisable sounds of personal computing. Played every time a PC finished booting, it was heard daily in homes, schools and offices around the world for years. As XP was replaced by later versions, the chime lived on through YouTube nostalgia compilations, retro gaming videos and meme edits. Today it survives as shorthand for early internet culture, instantly signalling a slower, pre-smartphone era to viewers who grew up with it.