You may know more than me but a basic step would be to plug in a set of headphones into your audio out replacing your audio out. If they work its a problem post the computer.
Other steps are go to control panel sound and check the settings. If not this, then there is the audio trouble shooter in control panel audio trouble shooters (rarely does much here). Failing all else remove the sound driver from control panel system and download it again.
As said above look for obvious errors like mute buttons set to on


Win 11 64, Asus Rog Strix z390 mobo, 64 gig RAM, 8700k