Audio and backlight of keyboard doesn’t work

Hey I installed Mac OS on my notebook and sound doesn’t work. I searched on internet how to fix that but nothing worked. They talked about some codec id or something like that but mine is not supported.

And when I want to have backlight on on my keyboard I press key to turn it on it will but after few seconds it just turn off. I tried to fix it but it didn’t do anything.

submitted by /u/_petrolej
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