Hi! Let me help you with this issue.
May I please know the make and model of your computer?
Please open Device Manager by right-clicking the Start menu and clicking on Device Manager.
Expand Sound, Video, and Game Controllers. Look for your Audio driver (Realtek) or AMD. Please let me know if you see it there.
If not, you need to visit your device's support website and download and install the latest audio driver. Reboot the machine after the installation and test your audio.