Windows 2000 was released by Microsoft in 2000 as a business-focused successor to Windows NT, and its system sounds, including the shutdown chime, became familiar to millions of office and home PC users. After the operating system was retired, the short sound lived on in nostalgia videos, retro computer restorations, and online soundboards where people collect classic Windows audio. It remains popular because it instantly identifies an era of computing, even for viewers who never used the system themselves, and works as a clean audio shorthand for switching off.