ExpertBook B9 OLED - No more sound ans no microphone

[JCC1]

Hello

I just bought an ExpertBook B9 OLED (B9403, 13th Gen Intel).

I have no more sound and microphone.

Further elements  :
- in System/sound/all peripherics/Microsoft Array : the check box "Format" is empty. ( I can't select anaything)
- In the tool bar, the "sound" icon is normal.
- I updated the drivers but nothing changed. 

Thank you for your support

[Falcon_ASUS]

@JCC1 
Did you see any audio devices in the Device Manager? 
[Windows 11/10] Troubleshooting - Sound (Speakers/Microphones) problems
If you recently purchased the laptop, I would suggest referring to the following FAQ to perform a system restore and then rechecking if the issue improves.
[Windows 11/10] How to Reset (Reinstall) the Operating System

Sorry for any inconvenience it may be caused.