Hi, I cant get any sound, not even from ¡tunes.when I go to check the sound in system preferences, for some reason output volume is checked (the mute box) I can not uncheck it, it will not let me. It also says no sound output devices found.any suggestion?

DON'T touch anything. Just restart it.

Sorry nvnv0

The OP has already rebooted her computer several times and it hasn't fixed the problem :-(

Bob

Hi Alissa

It's not too clear from your message, but you should be trying to repair the HD by booting up from your install DVD and selecting disk utility. If you've tried that and failed then it's time to take your Mac to a repair shop.

Fortunately, replacing the HD is fairly simple so if it proves necessary then it won't be too expensive, and if you've bought the extended warranty then it won't cost a thing. The real nuisance is that you have to restore all your files - I hope you have a backup.

The HD is one of the hardest working parts of any computer and it contains a number of moving parts which are subject to wear and friction. Statistically, they are very reliable but sometimes one will just fail for no apparent reason, and it can happen with any brand of computer. Don't blame yourself.

Best wishes

Bob

That settles it. Time to go to a repair shop. Good luck, Bob.

Just to let you know, Bob, that the above solution worked perfectly for me. Thank you!

(Edited: When I say the "above" solution, I mean the first set of Terminal commands you posted in this thread.)

OMG BoB... thank you for this solution... it's been two dayz without audio and i finally found your "FIX"... i am on Lion and a Mac Pro 1,1... thank you

4 years necrofiling.. oh Yeah!!

None the less, huge cadeau to Bob Lang1 to his competent input into this thread..

save me from an clean install on my mac pro1.1 that seems to where final call.

Thanks' your effort is highly apreated here many years later..✅