Hi Waters06, my name is Felipe Lucas, Independent Advisor and Microsoft Windows user like you.
I'll be happy to help you.
Some custom-built gaming desktops have audio output jacks on the front panel of the desktop and on the back as well, have you tried switching the audio output to see if the problem is with one of them?
Have you tried using a different headset or earphones just to check if it works?
After that, try all the checklist below, I believe that at least one of them can solve the problem:
https://support.microsoft.com/en-us/windows/fix...
Note: I know that you might have tried a few of them, but it would be good if you try all of them on the same sequence.
I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.
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Felipe Lucas
Independent Advisor