I know I know, the site looks lousy and I haven't blogged in ages. Works been really hectic (12+ hour days), I've been ill and have been doing a little each day in the background to at least make sure the three blogs that make up this site are working. I'll start making it look pretty soon.
Anyway this post is really one for google. I ran Apples software updater and suddenly no sound. This is a real bitch when your working with video and need sound. However after much searching I found lots of people with the same problem but no solutions. Eventually at the bottom of this Apple Forum post I found the solution.
If you have an apple mac, running os x. If you have no-audio. If the built-in audio seems to have vanished. If you run system profiler and you don't have things like Speaker: Connection: Internal, if you run Garageband and you get an error 10202. If in sound preferences, in system preferences, you have Default Input: None instead of Default Input: Built-in Audio or you have other sound devices (bluetooth etc) but nothing to do do with built-in audio, then this should solve your problem.
YMMV and I take no responsibility for you hosing your system even more. I read about people trying to fix this by resetting their NVRAM and PRAM and what not, and this is a much smaller change so should work.
It's likely your CoreAudio driver is corrupt. Or Missing. Get a copy from a backup, a mate or you can try the one I used which I you can download by clicking on the link at the bottom of this post. I bear no responsibility for this, but I can say it's a legit file, not malware or a virus. I'm just putting it here because I would have found it rather damn useful
- Replace
/system/Library/Components/CoreAudio.componentwith a working version. Try this version if you are desperate. - Delete this file
Library/Preferences/com.apple.audio.DeviceSettings.plist - Pray
- Reboot
- Dance a jib
Hope google finds this. Hope you solve your problem.
This community post was brought to you by goddamnfeckwasteofbloodytimefixingproblemswhenIdonthavethetime.com

1. The B
Before you do this, bizarrely one thing that has worked for me is to go into the speakers and check if the slider between left and right has jumped. If it has, bring it back to centre and sometimes sound is mysteriously restored.
I know, don’t ask me, but it worked.
2. Matt
I updated. I still have audio.
Does this mean my Mac is better than yours, Or just different?
3. Destructor
Macs suck, but they seem to suck with varying levels of sucksistency.
4. adam
thank you so very much