I hear you - the board works fine otherwise and was bought 3 months ago and I am somewhat annoyed that ASrock does not do cross shipping ( take my credit card for deposit ,ship me a product now, so I not out of service for two weeks). So I am leaning towards leaving motherboard alone to avoid the hassle of getting everything working again (once it works don't touch it philosophy). I originally hoped it was software problem which does not appear to be the case. Funny feeling is that I had two Asus boards for my 2600k and 3770k builds which worked fine for years (2600k is collecting dust in the basement to be got rid of, 3770k I turn on form time to time to put OS updates on as my backup gaming desktop pared with GTX 970, probably to be disposed of too ) while supposedly much fancies Taichi had issues after 3 months. luck of the draw I guess.
for sound, my brother wants to gift me with modi+ magni stack as birthday gift so I will give that a try
thank you to all who helped!