Hi GainbrianX,
A System restore option as earlier suggested by Jerico T. will help out if you are able to create a restore point. Kindly use this guide to create a restore point Create a system restore point (microsoft.com) then from here you proceed to carryout system restore Use System Restore (microsoft.com) This should help restore your pc back to audio.
On the second note, as Jerico T. earlier guided you, create a Windows 10 ISO as he has suggested Download Windows 10 (microsoft.com) using at least 8gbUSB Drive. The link will guide on how to create installation media using USB flash drive. Once this is created then make use of the link Jerico T. shared on how to repair your Windows. If that doesn't work;
I will ask that you plug your created Windows 10 USB after a system restart in your pc USB port and run it directly on your PC like you are installing an application software. This should restore your audio back.
Note: I will ask that you backup your personal files on D:Drive or on your external hard drive.