NO audio after 5870 install

Discussion in 'Mac Pro' started by tomllama, Mar 9, 2011.

  1. tomllama macrumors regular

    Joined:
    Jan 7, 2007
    Location:
    CA
    #1
    I added a new "Apple" 5870, paying more to reduce the hassle factor. However, once it was installed (it works great) I have lost audio. My system no longer sees that I have speakers connected (but they are). System preferences has no audio output options. I get feedback hum from the speakers when I disconnect and reconnect, so they appear to be working fine.

    I know it has to be something stupid ... any idea what (I did a search and found nothing)?
     
  2. goMac macrumors 603

    Joined:
    Apr 15, 2004
  3. tomllama thread starter macrumors regular

    Joined:
    Jan 7, 2007
    Location:
    CA

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