Running Win 10 on a Dell Lattitude E6400.
Problem is audio is not working.
Couple of months ago I installed driver for an audio interface (Tascam US-1200)
and it was working fine.
Occasionally, however, there was no audio problems as if the computer was getting
confused between the laptop audio and the audio through the interface.
I would bounce back between the two when this happened.
Currently the audio interface audio is barely audible and the laptop audio is none existent.
Dell Audio drivers and audio interface drivers are updated.