Drivers audio missing

Good morning, yesterday I formatted my Chuwi Gemibook. Everything seems to have gone well, except for audio input and output. So, I can’t hear any sound. It says “no audio device installed.” Can anyone help me? I’ve found several discussions on this topic, but I don’t know how to use the files uploaded by users.
I’ve actually installed several audio drivers, but none of them have helped.

Please, I’m desperate.
Help me.

Always before reinstaling OS you must do a drivers’s backup. Its esasy with doubledriver app.

I need to know what’s your computer. Please write model and serial number.