The Windows NT 4.0 startup sound comes from Microsoft's Windows NT 4.0 operating system, released in 1996. Unlike joke sound effects or loud meme stings, this clip spread through retro computing videos, operating system archives, and nostalgia edits focused on classic PC culture. It is still used because the chime is instantly associated with late-1990s desktops, workplace computers, and the feeling of an older machine coming to life. That recognizable boot sound makes it useful for both sincere tech history posts and ironic vintage computer memes.