I was without laptop sound for over year. (Thought I blew the sound card in Iceland due to power differences). Ugh. Finally realized I could try different IDT audio drivers. Rolled them back and voila! Now using IDT device 6.10.6329.0 and Intel 6.14.0.3074. I have sound!!
HOWEVER, Beats cannot find the startup file now! I'm reluctant to change any drivers to have Beats work - are there any other suggestions? Much appreciated. I can live without Beats if I have to but, not preferable.