Originally Posted by Verxon
I can see why your volume and onboard sound isn't working well.
For Levels tab, put it at 50% , for the environment tab knock it down to 24bit 48000hz studio quality.
For the realtek hd audio manager panel, put the environment on living room, put the equalizer on party.
Play a mp3 and see if it sounds better and play a video to make sure it works right.
Just a warning any settings too high like I've seen in your screenshots.
Something will short out eventually or stop all completely if your not carefull with your settings.