Windows NT 4.0 was released by Microsoft in 1996 as a business-focused workstation and server operating system, known for its stability and its familiar Windows 95-style interface. Thirty years later, its startup sounds and interface have become shorthand for nineties office computing, shared by retro technology enthusiasts in anniversary posts, emulation videos and hardware restorations. The clip survives because it is instantly recognisable to anyone who used a workplace PC in that era, even without a picture on screen.