messed up audio playback/microphone with video recording

Don't know what I've done. Wanted to do a video recording using "camera" from my windows desktop. Got tinkering in my audio settings to eliminate background noise cause there was all this "whooshing" wind type sound during playback. Now I have NIL volume on video recordings I do with my computer's app. The playback is so faint...I have done everything I can think of with the DTS audio...put the microphone up to 30.0+ decibels (the dot on the slider is at the top). I've gone into my realtek settings & everything is on full volume. I can't figure this out...I should be getting normal playback-full volume on sound like I was before I got adjusting the andrea filters to eliminate background noise. I unselected all of those, experimented with checking & unchecking one thing or another...still the same. I barely have any volume on playback yet all the volume bars are at 100. It makes no sense...I want to do a video message for my daughter who's expecting her first child to pass along some information about what to expect when you're expecting...& I've completely screwed up my sound recording. Even selecting to restore to defaults has had no effect.

If you have a System Restore point that is BEFORE you did whatever you did, use that as it should fix it.