Realtek hd audio wave slider turns down to No volume.
Realtek Audio 'wave' slider turns down to No volume at all on the master volume. It also happens when I check 'Sounds and Audio Devises Properties'. I also hear a clicking sound occasionally, as if there is a pop up or something messing with it. I don't know why this is happening. It just started doing this 4 days ago.
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Could be a corrupted registry entry. Try uninstalling the driver, re-boot, re-install it, re-boot.