Jumped the gun on this one - although the solution works, every reboot causes Win 10 to go back to 'no sound' issue :(
I was able to re-step the install and it works, but keeping the machine without regular (everyday) reboot is a not something I can do for long (dev machine).
If this had to do with upgrading to win 10 19xx whatever I found the problem was within windows itself and not the driver. I simply went to the windows (not the drivers area) for sound control and enabled whatever was giving me trouble. I have had no further problems except my motherboard is obsolete and no longer supported by gigabyte when it comes to drivers etc... so you need to make sure all routes to the device are enabled and then you might decide after doing this to be a hardware issue instead ??? I still want Microsoft to create a gaming mode boot up where you only run like steam or origin without anything unnecessary running in the background to slow the machine down. Such a boot to exclude microprocessor or memory or disk undercover demanding activities. these pcs are little more than the old IBM mainframes which shared time between various users. in the gaming case you want to be the only user on the entire machine.