[Ti] Airport will not turn ON

[Peter Krug]

>>Our department has a wireless network set up.  It is not with an 
>>Airport base, but last week, I was able to connect into it with a 
>>specific password and it worked fine when I chose Airport for the 
>>connection.
>>Today, I tried the same connection but the Mac tells me the Airport 
>>is OFF and when I try to turn it on, it does nothing.  There is not 
>>any signal strength shown in the Airport window - I assume because 
>>it is not turned on.
>
>Perhaps the Airport extreme card has come loose?  The airport looks 
>like a quarter pie piece, right?  You see no individual grey bars?

I mean the icon in the menu bar.

Peter