Hi, Evan:
Does your notebook have the Intel HD graphics?
If so, In the device manager, under the sound, video and game controllers device manager category, do you see two High Definition audio devices listed--one IDT HD audio and one Intel HD audio?
Or do you see one IDT HD audio and one generic HD audio device listed.
Hello paul,
Thanks for the reply. I have indeed one High definition audio device, and IDT Hight definition audio CODEC listed under the sound, video and games tab.
You're very welcome.
OK, you should be able to fix this problem pretty easily.
Since HP does not officially support your notebook for W10, but the W10 graphics driver works, we are going to add the HDMI audio driver from the W7 graphics driver file on your notebook's support page, without messing with the working W10 display driver.
First, download and install this free file utility. The 2nd file on the top of the page is for 64 bit.
After you install 7-Zip, download and save but do not run this W7 graphics driver file.
This package provides the Intel High-Definition (HD) Graphics Driver with Turbo Boost Technology for the supported notebook models and operating systems.
ftp://ftp.hp.com/pub/softpaq/sp64001-64500/sp64360.exe
Now that you have downloaded and saved the graphics driver file, right click on it, and select 7-Zip from the list of options.
Have 7-Zip Extract to: and let it extract the driver file into its folder file name (sp64360).
Once that is done, go to the device manager and click on the plain High Definition audio device (not the IDT one).
Click on the driver tab, click on update driver.
Select the Browse my computer for driver software option, and browse to the driver folder 7-Zip created.
Make sure the Include Subfolders box is checked, and the audio driver should install.
Restart the PC, and you should now have video and audio via the HDMI out port.
thank you very much, it worked.
Anytime.
Glad to have been of assistance.
i have this same problem, and i have tried all the fixes below. wheni go to install the aclink audio drivers they fail because there is no media device installed in the computer, or it cant locate the device. also tryed to install the conexant HD audio drives as well and the microsoft UAA drivers for audio and nothing there either. this audio worked fine before windows 7 upgrade, i knew there was no driver for windows 7 for this unit and the vista driver fix didn't work either. but it played sound fine with Linux Mint 17.01 an 03 installed so i know it has an audio board init . for some reason no matte what ive done or where ive looked it can't be found, and all driver istalation attemps fail because it say there is no audi device found/installed on the unit ! so ; anyone got any other ideas that no one has tryed yet?
Welcome to the HP forums! 
It is a great way to engage, post questions and find resolutions by working with specialists in the HP community. I understand that you need assistance with speaker issues on your computer. I’ll be delighted to assist you with this.
Awesome job on diagnosing the issue correctly and performing some smart troubleshooting before posting your question on HP forums. Kudos to you on that score. It is a privilege to work with tech-savvy and technically competent customers like you and we greatly value your business with HP and it is a genuine pleasure to assist you here.
For better clarity and to assist you better I would require more information regarding this.
Please check visit these link for further assistance.
Link 1: http://support.hp.com/in-en/document/c04973149
Link 2: http://support.hp.com/us-en/document/c05112033
Although this link is for desktops, if you have connected external speakers to your notebook, you could still use the document for troubleshooting the issue.
Hope this helps. Let me know how this goes. I genuinely hope the issue gets resolved without hassles and the unit works great. Please reach out for any issues and I'll be there to assist you.
T
o simply say thanks, please click the "Thumbs Up" button to give me a Kudos to appreciate my efforts to help. If this helps, please mark this as “Accepted Solution” as it will help several others with the same issue to get it resolved without hassles.
Take care now and have a splendid week ahead.
Hello Mezia,
I am sorry for replying so late, and my apologies for the delay. I have been out of station and hence the delay.
Well, if there are no updates , and since it was working fine , we can do this system restore.
So.. turn the computer off, and while turning it On keep pushing F11..
choose the options : Advanced options/system restore. OR troubleshoot/recovery manager/system restore.. choose a previous date that is highlighted..
So .. preferably choose the date in the middle of october, if they are there .. and then restart the computer..
I would appreciate the reply on this , and hope that this will resolve the issue..
Thanking you once again for choosing HP,
Regards,
Ashok
Hello
Thanks for the post, I see you are facing issue with audio on the computer. I will be glad to help.
Firstly, the sound card is integrated on the motherboard and cannot be replaced without replacing the motherboard. You can visit www.partsurfer.hp.com and enter the product number of your computer and it will give the list of replaceable parts on the computer.
Since you have not mentioned the exact issue you are facing, I request you to reply with a brief description of the issue for me to be able to assist you correctly.
Please refer to this link http://hp.care/2eYJ6Ri this link provides a lot of articles which will help you troubleshoot the issue with any sound issues for your computer.
Let me know if this helped or feel free to respond for further assistance.
Please click ‘Accepted Solution’ on the post that solves your issue to help others find the solution. To show appreciation for my help, please click the ‘Thumbs Up’ Icon below.
Hello, Just do right click on the sound icon available at the bottom of the right corner of your desktop screen and click on the troubleshoot the sound problem option. Hope it will help you!!
After updating to Windows 10 anniversary edition, my sound driver updated as well. With that update my led light will no longer come on when I press the mute button. I know its fairly trivial but I just bought this laptop and already got used to it as well so it's quite irritating to have something not working as intended already. Alas it is just a software issue so I hope it can be fixed. I've read multiple forums that says its related to the sound drivers. However I've downloaded and tried all 3 drivers on HP's website and the led light works for none. What other options am I left with?
Hi,
Can you post back with the following details.
1. The full Model No. and Product No. of your notebook - you can usually get this by holding down the fn key and pressing esc, otherwise see Here for a guide on locating this information.
2. Hold down the Windows key and press R
Into the Run window, type devmgmt.msc and hit enter.
In Device Manager, expand Sound, Video and Game Controllers - what devices are listed here?
Regards,
DP-K
Hi guys, maybe you can try this, on Bang & Olufsen Sound Manager, when you listening to music, click the Listening Experience, you can choose Music, turn up the bass, treble and dialog clarity higher, then on the Graphic Equalizer choose Club, i find the sound much better and louder.. hope this help
Hi,
A friend of mine has an hp HP Pavilion 15-au081nb but has some troubles with the audio coming out of the speakers.
The sound is normal at first but after a few seconds the sound lowers and dispears. this problem does not occur when using a headset. i have no clue what the problem should be.
As far as i know this issue has always been there.
i have already reinstalled the driver with the latest version i could find on the hp support page for this device and installed all the windows updates.
I hope a solution can be found.
Greeting
Michaël
Hi
i think this is a hardware problem take it to an expert to check the spacker or if it have still warranty you can replace it.
Hi
Thanks for getting back after trying the steps. Lets try the steps from below and check if it helps.
Remove the headphones. Right click the sound icon bottom right and select playback devices. With the playback properties window still open plug in your earphones and a new item should show up. It might show up as Speakers with gray information underneath. Click on it and make default. Should now disable your speakers.
Let me know how it goes. Thanks!
Please click "Accepted Solution" on the post that solves your issue to help others find the solution. To show appreciation for my help, please click the "Thumbs Up Icon" below!
and when mute the sound in the speakers, the headset audio is also getted muted
Dear Customer,
Please reinstall Audio Drivers from this link: sp75513.exe
Hope this helps, for any further queries reply to the post and feel free to join us again
**Click the White Thumbs Up Button on the right to say Thanks**
Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.
Thank You,
GBL84
I am not an HP Employee
Hi there,
Thanks for the prompt reply. As silly as this sounds, the problem seems to have fixed itself. I dont know if it was because of the restarts, because I certainly restarted the machine every time I tried before, but it's working now again with no problems. Not sure why it took so long to work but thanks either way. Sorry for the inconviencnce
You're welcome and good to hear it's Ok
All the best,
DP-K