HT1338 I have no input or output audio devices showing "what do I do to fix this problem"

Something happened to my mac book air. I now do not have any Audio input or output devices showing on my "Hardware, Sound then to sound effects but there is nothing there ? What can I do? Tks

You aren't running 10.3 if you have a MacBook.   Go to the Applications -> Utilities -> Audio Midi Setup to configure your audio out.   Go to Apple menu -> About This Mac to find your Mac OS X version for future threads.

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