Windows XP was Microsoft's widely used operating system, released in 2001, and its shutdown chime became one of the most recognisable sounds of early home computing. As older PCs were replaced, the short melody survived in nostalgia videos, retro tech channels and meme edits, where it instantly signals an old computer powering down. It is often paired with the Windows XP Error sound in compilations about classic software, and it remains popular because it is short, gentle and immediately familiar to anyone who used a Windows computer in the 2000s.