For technical context, this identifier usually points to a scenario where the or the core driver file ( RTKVHD64.sys ) is failing to initialize correctly due to:
A: The driver may have reset your audio levels. Go to Sounds → Playback device → Properties → Levels tab. Ensure the master volume is at 100%, and check if “Loudness Equalization” is off (it reduces dynamic range, making everything sound equally loud but less punchy).