My MacBook Pro OC X 10.4.11's Airport not working when I run the system profiler shows no information found also the sound system not working.
A1212, Mac OS X (10.4.11), Serial No:6N7010CHW4HB
Have you done a PRAM reset, CMD+Option+p+r...
http://docs.info.apple.com/article.html?artnum=2238
Intel-based Macs: Resetting the System Management Controller (SMC)...
http://support.apple.com/kb/HT3964
Boot off your Install Disc & see if Airport shows.
Sound and Airport not working any moer Mac Book Pro Tiger
