If you want to truly hear the evolution, compare:
Summary
: If audio isn't working at all, you may need to Roll Back Driver or update your audio hardware in the Device Manager . windows 10 build 10074 sounds
For years, Windows had relied on the sound schemes established in Windows 7. Build 10074 broke that tradition, introducing a modern audio palette that would eventually define the Windows 10 experience. The Evolution of the Windows Soundscape If you want to truly hear the evolution,
Other system events received similar treatment. The (the sound of an error dialog) was softened dramatically. Gone was the harsh, percussive "bong" of Windows 7. In its place was a short, low-frequency, almost rubbery thud—an auditory cue that suggested "please correct your action" rather than "you have failed." The Evolution of the Windows Soundscape Other system
Build 10074 reintroduced a startup sound (absent since Windows 8), but not the one you know today. The final Windows 10 launch sound is a subtle, swelling synth pad. In 10074, the startup sound was .