Input and output audio not working and no startup chime

The audio, both input and output, on my MacBook Pro has stopped working as well as the startup chime. Otherwise the computer starts up and seems to be working normally. Any ideas as to what the problem is and solutions?

Hey, my MacBook Pro has been doing the EXACT same thing off and on for a few weeks now.
I'm just now having time to browse the forums, so I've not even asked about it.
Yesterday it all started working normally - all sounds.
I'll follow this discussion for sure.
There definitely seems to be enough 'Mac-Daddy' Mac Helpers on here to be able to easily resolve this issue.
i.e.: Andreas! Just reading her stuff lets me know she REALLY knows what she's talking about & is able to explain the highly advanced info in terms people actually get!
Thanks for asking that question!
~dOiTdiGiTaL~

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I hope this post helps and saves a lot of time to any of you having this same problem.
If any other questions (or thanks ) reply to this post.

This is great! I've got one follow-on problem to this, though: My format rate seems to keep snapping back to 16000, and breaking until I go back and fix it again (32000 works fine for me). Any idea how to twiddle things so that 32000 is the default for my device?

IPad audio output is not working properly, except on Siri. Any ideas on what is wrong and how to fix it?

iPad audio output does not work, except for on Siri. The mute button is not on, and the volume buttons have no effect/ don't work (unless Siri is open). I have reset the iPad, tried iOS7 and iOS8 resets, which didn't help. The audio output mostly works when headphones are out in, but has a tendency to cut out from time to time. Without headphones, Audio might start working again briefly from time to time, but most the time it doesn't. Any ideas on what is wrong with it and how to fix it?
my iPad is a 3rd gen, 16GB wifi only model, if that helps
I did take it to an Apple Store, but the inncorrectly insisted that my speaker was bust and it would cost £250 to replace the whole iPad!

Godly19 wrote:
iPad audio output does not work, except for on Siri. The mute button is not on, and the volume buttons have no effect/ don't work (unless Siri is open). I have reset the iPad, tried iOS7 and iOS8 resets, which didn't help.
iOS 8 isn't even out yet. If you are running iOS 8, I assume you are a developer and if you are, you are in the wrong forum to try to get help. If you are not a developer and you're running iOS 8, maybe that's why you are having problems on the iPad.
The audio output mostly works when headphones are out in, but has a tendency to cut out from time to time. Without headphones, Audio might start working again briefly from time to time, but most the time it doesn't. Any ideas on what is wrong with it and how to fix it?
The type that I made bold doesn't make sense. Is this a typo and you mean that " headphones are not in"?
I did take it to an Apple Store, but the inncorrectly insisted that my speaker was bust and it would cost £250 to replace the whole iPad!
And you know they are incorrect because you get sound here and there from time to time? That fact doesn't prove that something isn't working correctly inside. You could very well have a bad connection inside the device causing this, but somehow you seem to know that's not the case.

Audio not working on channel 5 and 7,, okay on all others????

audio not working on channel 5 and 7,, okay on all others????

dalharris wrote:
audio not working on channel 5 and 7,, okay on all others????
Without knowing all of the specifics in your situation, you may want to try these options:
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- If you have an HD or SD full cable box:
Most low or no audio issues can be corrected by setting the Optimal Stereo output of the cable box. Here are the steps: Press the Menu button twice on your remote control. Select Setup. Select Audio Setup Under the Optimal Stereo setting, choose "Select to Optimize" and press OK/Select on the remote control
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Press the Menu button twice on the Comcast Universal Remote Control. A new screen below will appear, with the top-left option automatically selected.
Use the down-arrow key (above the Info button) to navigate to Setup and press OK/Select (the center key on the remote control in the middle of the 4 arrow/directional buttons).
Use the down-arrow key (above the Info button) to navigate to Audio setup and press OK/Select.
The Default Audio Track will default to the first option–Channel default–which which is always the channel’s main audio track (unless it was previously changed).
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3. Press three times for French (Français) 4. Press four times for Portuguese (Portugues).
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Sir,
I have dv-5 1102 tu model laptop, in that left speaker audio not working. But, in headphones & Speakers have no problem in both left & right audio.
Kindly do the needful

Hey @KKVK ,
Welcome to the HP Forums!
I understand your left speaker is not working on your dv5 notebook.
If the headphones are working it would tell us the sound card is fine. The same properties are applied to the speakers and the headphones in your audio control settings.
You could try a system restore to before the issue started to make sure it's not something in the operating system. To perform a system restore see the following guide: Using Microsoft System Restore (Windows 8) or Using Microsoft System Restore (Windows 7).
If this fails I would suggest contacting HP Phone Support to send the notebook for service. Please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the following link to get the support number for your region: Phone Assist Worldwide.
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Please click the "Kudos, Thumbs Up" at the bottom of this post if you want to say "Thanks" for helping!
Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
The Great Deku Tree
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Input and output audio not working and no startup chime

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