Righty Ho, I have successfully finally got Realtek HD Audio Manager. It would appear that this is something else that a Windows 10 update broke and nothing to do with Gigabyte. First off, this is not my fix. I found it after doing several searches for this problem and it would seem that it's very common. The solution I found that worked for me was a combination of two replies in a
thread on Tom's Guide.
Step1
First of all, make sure you have the latest driver installed
1) go to Task manager -> Start-up -> make sure Realtek is enabled
2) open Device Manager ( type in search bar ''device manager'' )
3) go to Sound, video and game controllers
4) right click Realtek High Definition Audio
5) choose Update driver
6) choose Browse my computer for driver software
7) choose Let me pick from a list of available drivers on my computer
8) choose the latest (by date) and then click Next
That has worked for some people but it still didn't work for me even after a restart so I kept reading and found this:-
Step 2
Go to C/Program Files/Realtek/Audio/HDA and double click on RtkNGUI64 which should start the Audio Manager.
This worked for me but I still can't get it to start with Windows so after a restart I have to click on the .exe again to get it running. Just to reiterate, this is not my fix but a combination of a pair of posts in the thread I linked to above.