How to enable audio sound on and ethernet on lga775 mobo

[Hkshx86]

I am able to install macos sierra on my system but there is a issue that no sound and no internet connection on this system fix .need next for that .
My system lga775 gag41 mobo
Cpu e8500 core2duo and gpu gt 210 n.

 

[Jamesbond007]

Not Buying Advice. Move to Sierra Desktop Support.