No signal coming through microphone

If this is really the case, I would tend to search the fault outside the computer.
And since the AKG dynamic microphone was working,
I would bet, that it has something to do with the phantom power.
Maybe the cable is broken? Pin 1 or the ground wire is disconnected?
Or the interface can’t deliver enough power on that specific USB port you are using.

The worst case would be that the microphone is broken,