Windows XP arrived in 2001 and quickly became one of the most widely used versions of Microsoft's operating system, so its startup chime was heard by millions of people every day as their computers switched on. As XP was gradually replaced, the sound survived online through nostalgia videos, retro computing channels and meme edits that used it as shorthand for the early internet era. It remains popular because it is instantly recognisable even to viewers who never owned an XP machine, instantly evoking dial-up days, chunky monitors and a slower, simpler time online.