I've never examined a Registry log.reg, but--
could you zip that file for me and attach same to your next post?
I will give you the approach I would follow, although my explanation is weak.
I would go into device managment, and disable and remove the drivers
for all devices which show a yellow triangle or worse yet, a red stop sign.
Then I would shutdown 100% the computer. Don't just "hibernate' or 'sleep', but actually shut power off.
Now power on the computer. MS will install drivers without any effort on your part. Let MS install drivers. Do NOT install any more drivers after MS finishes installing their own default drivers.
Your sound will probably work now.
Let me know the results and I'll suggest a change to MS update to guarantee that update fetches the latest updated drivers that MS has. These are, generally, not the very, very latest drivers from the manufacturer.
Oh yes, to run device management: WIN |
type DEVMGMT.MSC | ENTER
You want to Right-click on the device with a yellow triangle and choose disable, if the option is there, choose Uninstall if the option is there.