No Sound from Mac Mini Under OSX Lion 10.7

I had to reinstall OSX Lion Server 10.7 on my Mac Mini late 2011 due to partition and boot record corruption. Since reinstalling I have not have sound. The only sound device that shows under Utilities||Sound is "Internal Speaker". Previously, "Headphones" also appeared. I have a Harman Kardon Soundsticks 2.1 sound system. It has only one sound connector. I always plugged it into the green port on the Mini. It worked fine. Since reinstalling I have no sound at all. Any ideas out there ? Solutions ? I've been through the Cmd-P-R deal, reinstalled OSX Lion Server, - all to no avail. HELP !!!
TIA.
Best regards,
Brian Corll

You have almost 25 GB of free disk space not memory which isn't really very much at all. It is time to consider cleaning up your disk to increase your free space.
If you tell us the specs of your MacMini we can tell you why you are getting the error message.
Allan

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