Lost all audio

I have an HP Envy 17 running Windows 7. All audio on my computer (DVDs, mp3 files, system sounds, etc) has suddenly stopped working.
Perhaps not coincidentally, a large number of Windows updates were just applied to my computer.
How should I proceed?
Thanks for your suggests,
Trip

Sound Troubleshooter:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01912228&cc=us&dlc=en&lc=en
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Lost all audio after installing HP recommended upgrade??

I just update per HP suggestion. Lost all audio on my notebook. Need it back asap as I am running audio for a show tonight

@Bob2Lt4U ,
Hello and thank you for posting on the HP support forums. Please run a system restore back before the update.
HP PCs - Using Microsoft System Restore (Windows 7)
If you have any more issues please post back
Thank you again for posting and have a great day.
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Lost all audio in iMovie '09

I have suddenly lost all audio while working on project in iMovie '09. It started when a newly imported video had no audio but my saved project still had its audio. Then the problem spread to my project also. Now I have no audio at all. I've checked the obvious like mute, computer volume...etc. Any ideas out there?

No. I did not enter my Admin password. I tried to open the iPhoto library from my User -> Library -> Pictures folder. It said something like "Needs to upgrade.. Upgrade now?" Then, I opened iPhoto and had iPhoto '09 but no new pictures.
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When I accessed the iPhoto library file from in User -> Library -> Pictures, it only contained pictures from several years ago. It apparently accessed a different iPhoto library. Maybe that's what the upgrade was for?
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Added a song to a movie in imovie and lost all audio across all clips. Any help?

I added a song to a movie in imovie and lost all audio from several clips. Removed the song and audio is still gone. How can I regain original audio once lost after adding song to imovie?

The audio should still be there. Select a clip and open the Inspector to the Audio Tab and turn the volume up to 100%.

I have lost all audio on both my internal and external speakers.

I have lost audio on both my internal and external speakers. I have checked the System Preferences when my external speakers are plugged in it is acknowledged. When using internal speakers they are also acknowledged. Sound volume on Preferences is on and fully high. The sound buttons on the keyboard do not work and the sound level is now locked in at full sound and cannot be adjusted using the keys. The System Preferences shows that Mute is now checked and I cannot uncheck it. What should I do to get my sound back both internally and externally?

Repair permissions & restart.
Check your settings in the Audio Midi app which is located in the Utilities folder.
http://support.apple.com/kb/TS1574 Troubleshooting issues with no audio from built-in speakers on Macs
Trick/Tip: Open up GarageBand if installed then, open a program (optional).
Quit out of the GarageBand app.
=====================
Repairing the mysteriously muted Mac
The background on the issue is that there’s a small sensor switch inside the headphone port. When you insert a headphone jack, the sensor understands what's what and changes the sound output setting to Headphones. If you insert a jack for digital audio output, the device changes to Digital Out. When you remove the jack completely, it should read Internal Speakers.
The spirits tell me that there’s a very good chance that you recently had something jacked into this port—a set of headphones or a cable leading to powered speakers, for example. When you removed the jack, something in the port prevented the sensor from tripping correctly. That’s why you see Digital Out instead of internal Speakers.
The solution is to force the sensor to do its job. The safest way to do that is to simply run a jack in and out of the port a few times. Much of the time, this takes care of the problem by correctly tripping the sensor. If that doesn’t work, there may be gunk in the port. Before turning to more invasive techniques, get a can of compressed air, attach the small tube that fits the nozzle, and blast a few shots of air into the port. With any luck, that should dislodge the gunk and the port will operate as it should.
If that doesn’t work, find a foam-tipped swab that fits (electronics shops generally carry them), dip it in rubbing alcohol, and gently insert it into the headphone port in an attempt to wipe away any stubborn gunk. I recommend foam rather than cotton swabs because the cotton variety might leave threads behind. (This same technique works well with misbehaving headphone ports on devices such as iOS devices.)
It's possible that gunk has nothing to do with it. Rather, it may be that the switch just needs a subtle nudge. If a jack or swab doesn't work, I've heard of people successfully resetting it with a deft poke of a toothpick.
http://www.macworld.com/article/2031146/repairing-the-mysteriously-muted-mac.htm l

I have lost all audio output

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I would have assumed they all use the same Audio/Midi setup?

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I'll try anything but the problem is that all projects are not coming out and wouldn't the solo buttons be limited to each project? If the solo is stuck on one song it shouldnt be affecting all other songs right? but who knows,,,IT CANT HURT TO TRY!! Thanks for your input and I'll let you know!!

I've lost all audio and more . . .

Hello Steve and All.
Just when things were going well, something fatal has occurred. I use a mix of MOD files (Panasonic cameras) and AVI files (Canon mini DV camera) and all has gone well with the editing until yesterday.
The problem is that the program (Premier Elements 7) thinks that my media is off-line, but it isn't off-line. When I try to relink, the 'Locate Media' option gives the following error: "The selected file cannot be linked because its type (video) does not match the original file's type (audio and video)."
I cannot proceed from there.
When I try playing other MOD files in my library, I get no sound. When I try playing the MOD file with another program, everything works fine.
Now I am stuck. I cannot get Premier Elements 7 to recognize any of my MOD files. It has worked for months, but this has me at a dead stop.
Last night I ran the Repair Option from the installation program disk and the program began to work again -- but it was time for bed, so I shut down for the night. Tonight, the problem is back and cannot be repaired.
I am stuck in a big way. My deadline for a party video is Christmas, but I cannot proceed.
Please help me. I don't know how to resolve this problem.
Sincerly,
Brian

The problem started part way through the editing process last night. No Windows update was installed.
If one has Window update set to full automatic (default), there are many OS updates that will download and install, and the user never knows about them, unless they require a reboot. Many do not. I just manually downloaded full updates to Office, plus four new hot-fixes for XP-Pro, and none required a reboot. Unless one has changed the default, these things can download and be installed without the user ever knowing about it.
So back to my hypothesis. Could this be from a corrupt file? If so, how can I determine the culprit file?
Glad to hear that things are working for you now. This would be when I would do a Save_As, and a Save_As_a_Copy, just in case. This ARTICLE will give you some of the details on the differences between the three flavors of Save, plus some background on what is in a .PREL file.
About the only way to track down a bad Asset would be to systematically eliminate Assets, testing along the way.
What is the connection for your external? USB externals have been known to have serious read/write issues. I'd look in my Event Viewer, and check for any error, or warning messages. Look especially closely in the links in any, for driver errors, or for Delayed Write Errors. That would point to the USB external.
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Hunt

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paviliong6, windows 7 home,just purchased in july, 2011. AUdio stopped working, including output thru dvd, headphones, etc, have tried rebotting, volume,audio controls, accessories, etc. not luck. ran virus scan, came clean. any help?

Hi,
If this has just happened recently, try running Windows System Restore. If you have Norton Internet Security installed, you will need to disable Nortons Tamper Protection as shown in Step 2, on the link below.
http://us.norton.com/support/kb/web_view.jsp?wv_type=public_web&docurl=20091112171719EN&ln=en_US
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Regards,
DP-K
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Lost all audio, HP 2000 Laptop.

All of a sudden no audio today. Checked the settings and everything seems to be OK.
Suggestions?
Thanks

Kenny, welcome to the forum.
When requesting help you should always include the make/model (i.e. p6-xxxx) of the computer and/or monitor. This information is necessary for us to review the specifications of them.
Signature:
HP TouchPad - 1.2 GHz; 1 GB memory; 32 GB storage; WebOS/CyanogenMod 11(Kit Kat)
HP 10 Plus; Android-Kit Kat; 1.0 GHz Allwinner A31 ARM Cortex A7 Quad Core Processor ; 2GB RAM Memory Long: 2 GB DDR3L SDRAM (1600MHz); 16GB disable eMMC 16GB v4.51
HP Omen; i7-4710QH; 8 GB memory; 256 GB San Disk SSD; Win 8.1
HP Photosmart 7520 AIO
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My iMac spontaneously lost all audio!

Went to bed it was working fine, woke up this morning and no audio. When I go to Settings the only option is Digital out - Optical digital out. No more built-in and no more speakers. I do hear the start-up chime, so I know it's not blown speakers. Any ideas how to get back my internal speakers?
Thanks!

Try resetting the SMC and pram/nvram
To reset the smc
Shut down the computer.
Unplug the computer's power cord.
Wait fifteen seconds.
Attach the computer's power cord.
Wait five seconds, then press the power button to turn on the computer.
To reset pram/nvram
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

Lost all audio-Windows Vista

Recently went through an automatic Windows update. Now, I have no audio whatsoever. It says, 'No Audio Output Device Is Installed'. I have a red X in the audio icon. I've tried downloading drivers, but nothing will work. PLEASE, someone help me...thank you!!
~Mike

Hello Laphil47,
Please take a look at this document, and follow the troubleshooting steps to restore your software and drivers by using Recovery Manager.
Good luck!
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Suddenly lost all audio???

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Well folks - I've been to the Genius Bar at my local Apple Store, and it was bad news. If your Intel iMac won't make a peep of any sort, it's probably the sound board. Later model iMacs have a separate sound board which can be replaced. Older Intel (i.e. 1.83 Ghz) iMacs' soundboards are integrated with the main board. So to restore sound, the entire main board must be replaced (about $850 part and labor). It's time to invest in a new iMac. Farewell to my old 17" Intel iMac - it has served me well since 2006.

Pavilion dv6661se. i have lost all audio. i get prompts that say 'no audio output device'

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In System Preferences>Sound do you have your internal speakers set as the output source?
You may have toggled on optical output with the Toslink cable - check to see if there's a red light coming from the port. If so, quickly plug and unplug a set of headphones for a number of times to see if you can toggle the switch back from optical to the internal speakers.
Good luck,
Clinton

Titles wipe out all audio

Wow, what an effect. After 10 hours of work, completing an iMovie project and burning several DVD copies, my wife noticed several typos within titles (spanish language). After fixing the errors, I lost all audio - not just with the clips containing titles, but within the WHOLE iMovie project.
What;s going on?
G4 Tower Mac OS X (10.4.7)

I am by no means an expert but would think that you are just adding the "file", not the playable on and that would convert the iPod into a masstorage device WHICH then would deleate all the musicfiles on it. What you need to do is to download a program to tranform the video file in to a mp4 file and then put it into iTunes and Then load it onto the iPod, that worked for me.

Lost all audio

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