I've done a google search and have done a few things they asked me to do and still no joy.
Everytime I switch the MBA on, the speaker symbol comes on but then after 5 or 10 secs after loading it goes grey again, I have been to many mac forums but they don't seem to have the answers for my problem.
It also says no output or input on Audio can be found, so really in a pickle, can someone help please.