The Windows XP startup sound comes from Microsoft's Windows XP operating system, released in 2001. It was composed by musician Bill Brown as part of the system's built-in audio identity. Over time, the chime became one of the most recognizable computer sounds online, especially in nostalgia compilations, retro tech videos, and memes about school computers and family desktops. It still gets reused because a few notes instantly place viewers in the early 2000s and communicate old-PC energy without any extra setup.