Dell Latitude E6420 Internal Speaker not working in OS

Hello Dell community!

Yesterday I did a motherboard swap in my E6420 from the Intel HD board to the Nvidia board.

Everything seems to be working fine, except the internal speakers won't work in the OS.

I booted into the built in diagnostics, tested the audio, and it played the tones of audio through the speakers.

I have a suspicion that because I did the Motherboard swap, I can no longer use the old IO board due to it being a different size, the audio device may be on that as it has the headphone jack.

Also, I know it uses a different sound device, but the HDMI audio works just fine.

Any help would be appreciated!