Microsoft introduced this startup sound with Windows XP in 2001, and it played every time the operating system finished loading on millions of home and school computers. As XP became one of the most widely used versions of Windows, the short melody became familiar far beyond tech circles. Years after support ended, it lived on in nostalgia videos, retro computing content and meme edits that use old technology as a punchline. Its continued popularity comes from instant recognition: a few seconds are enough to place viewers back in the early 2000s.