I see you mentioned " no output from audio jock" , can you double check if its the right jock or port ? After that as @flank21 said , check whether you have already installed audio drivers on device manager. The thing is that if your OS is Windows 8, it automatically detects sound.
Also, while in the sound propertied, can you pluck and insert the audio jock or jack and see the difference (changes).
I hope this helps.