Thanks for the information. I tried reinstalling the Realtek drivers, but that did not solve it for me. I found that reinstalling the Intel UHD video drivers actually solved the problem which surprised me. Apparently, the Intel audio hardware is part of the video system. Thanks again for your response!
Hello -- The Intel High Definition Audio device is listed under Other Devices in the Windows 11 Device Manager (see screenshot below). I have attempted to update the driver, but Windows is unable to locate one for it and I have not found one listed in the Dell downloads for my device. This device was previously listed under Sound, Video, and Game Controllers so I am not sure what happened. Is there a way to download the appropriate driver and install it on my laptop? Thanks! [IMAGE]  
XPS 9700 - Intel High Definition Audio - Driver Missing Windows 11