Missing Stereo Mix (Realtek ALC4082)?
Missing Stereo Mix (Realtek ALC4082)?
Hi everyone!
My problem is that I don’t have the Stereo Mix device listed among my recording devices. It’s important to me because I use it a lot for my hobby.
First, some details:
Build: Aurora. Hardware configuration;
https://fr.pcpartpicker.com/b/QjH2FT
OS: Win11 Pro retail version 24H2 (OS build 26100.6899).
The update to version 25H2 is still pending, but since it’s not required and I’ve heard there are known issues, I’m holding off on installing it until those are fixed. The build was assembled and the fresh OS install was completed in late September '25. After setting up the necessary software and starting my hobby, I realized Stereo Mix wasn’t available.
During setup, I installed Realtek audio drivers (Realtek_Audio v6.4.0.2395_UAD_WHQL). I downloaded them from my MoBo support page:
https://pg.asrock.com/mb/AMD/X870E Nova WiFi/index.asp#Download
Now, turning on Stereo Mix isn’t straightforward—it requires checking the Sound -> Recording tab and enabling the device manually. I’ve never seen it there before. Check the screenshot below.
I tried following online guides, but they usually suggest showing hidden devices and then enabling them. That only works when Stereo Mix is already installed. For example, I had to do that in my older Win10 and Win7 versions, but on Win11 it’s completely missing.
I found a Reddit discussion about Realtek issues:
https://www.reddit.com/r/ASUS/comments/s...s_on_asus/
However, it mentioned Asus MoBo, not AsRock MoBo, so I didn’t try any software from the Asus site.
From my Device Manager, the Realtek USB audio device and USB host controllers are present and functioning properly (second screenshot).
All other audio inputs and outputs are working fine without problems.
Spoiler:
Check the screenshots (click here to view)
This is where I hit a roadblock.
How can I get Stereo Mix to appear under Recording devices?
🤔
That’s it.
I’d really appreciate help from the forums community about this issue.
Thanks in advance,
Aeacus
It might be worth checking other possibilities. When you right-click the small speaker in the lower right corner of the screen, a menu will appear. The choices inside this menu open many different windows, tabs, and settings. Additionally, explore the Accessibility section under Audio, which includes Hearing/Related options.
Realtek audio often encountered problems when Windows 10 was introduced, though these were resolved through later updates. In those cases, I discovered some steps to help fix issues where Realtek features appeared grayed out or missing, or caused general audio problems.
It might be worth checking other possibilities. When you right-click the small speaker in the lower right corner of the screen, a menu will appear. The choices inside this menu open many different windows, tabs, and settings. Additionally, explore the Accessibility section under Audio, which includes Hearing/Related options.
On AMD's support page, the most recent chipset drivers are version 7.06.02.123, which was released on 2025-06-13.
Link:
https://www.amd.com/en/support/downloads...x870e.html
Yet, from MoBo's support site, I downloaded and installed a newer version, 7.06.24.2226, released on 2025-08-15.
Link:
https://pg.asrock.com/mb/AMD/X870E Nova WiFi/index.asp#Download
Should I really be downgrading my MoBo chipset drivers?
🤔
Are you sure you're using the correct version? I own an AsRock X870E Nova Wifi, and its BIOS doesn't list a specific letter—rather, it's 3.xx. My system runs 3.40 while the latest is 3.50.
Link:
https://pg.asrock.com/mb/AMD/X870E Nova WiFi/index.asp#BIOS
After reviewing, it appears that known problems with 25H2 have been fixed or mitigated (source). So I think it's safe to let Windows handle the update.
This is something I've encountered while searching for solutions online. Some recommend completely removing Realtek drivers and allowing Windows to install HD audio drivers instead.
My MoBo also supports Nahimic audio, so I haven't installed its drivers or software, assuming Realtek would suffice.
🤔
Method #1 didn’t work. I wish it were that simple.
Method #2 looks promising but I can’t find the right audio codec on the Realtek site.
What I’ve found are codecs for less demanding applications:
Link:
https://www.realtek.com/Download/Index?c...enu_id=298
However, during my searches, I did locate the HD audio codec download page:
Link:
https://www.realtek.com/Download/List?cate_id=593
A few days ago, I attempted to download a 409 MB *.zip file for Windows 10. Unfortunately, the download slowed to just 10 KB per second, and after four hours of continuous downloading, about half was completed. Regrettably, I didn’t have time to wait another four hours before shutting down my PC, which ended the download.
Now I began downloading the Win10 installer (258 MB), but the speed remains modest, around 20 KB per second.
Method #3, Step 2 for Windows 11 didn’t yield results. The system confirmed that the audio drivers I have are up to date.
Method #4 with Audacity works, but it doesn’t provide Stereo Mix and requires many additional steps, making it a workaround rather than a true solution. It’s better than nothing, but I’d prefer having Stereo Mix functional.
I’m seeing three options appear:
* Troubleshoot sound problems
* Open volume mixer
* Adjust sound settings
Checked the input devices—there are four I already have and they’re working, but no Stereo Mix is available.
Are you certain you're viewing the correct MoBo? My AsRock X870E Nova Wi-Fi model doesn't display BIOS versions with letters. I've previously used ASRock boards and owned an A85X-ITX, which were unique in having BIOS labels starting with P. Gigabyte uses F prefixes, while MSI follows a 7-character alphanumeric format. Asus is the rare exception among popular manufacturers using a 4-digit number for their BIOS versions. When revisiting B550 chipsets, you'll still see the P in the BIOS screen for ASRock boards. The current version list from ASRock mirrors what EVGA used until they changed, with decimal points separating numbers on either side. I've also observed the same pattern as the URL you shared, where my memory often returns to 'P' instead of a number. Regarding chipset driver versions, I usually download both and keep them ready. At first, I relied on AMD's support site, but if issues arise, I switch to the version listed on the motherboard manufacturer's site.
When it comes to MSI, i can't tell heads or tails about their BIOS versions.
E.g here's the pic of my now retired Skylake build MSI BIOS.
Spoiler:
Pic of MSI Z170A Gaming M5 BIOS
BIOS version: E7977IMS.190 with build date of 05/11/2016.
But on MoBo support page, there is no BIOS with that version name or even with that date.
Link:
https://www.msi.com/Motherboard/Z170A-GAMING-M5/support
There is version 1.C with release date 19/10/2016
and version 1.D with release date 19/12/2016
Making me wonder, did i ran some special BIOS that was never released for the public?
🤔
Btw, i never updated the BIOS since i didn't have a need to. Build worked fine for the 9 years i used it.
Still downloading it. 204 MB has been downloaded.
I'll post an update about it at later time.
E.g here's the pic of my now retired Skylake build MSI BIOS.
Focus your attention to the last two digits in the BIOS screen. Your image shows .190 which is 1.9, so you're pending updates on that, with 7977v1I being the latest version.
I found this connection on December 19, 2024:
https://www.solveyourtech.com/how-to-use...dio-guide/
That is the standard reference for when OS has Stereo Mix enabled but is otherwise hidden or turned off. However, I don’t have any Stereo Mix available. Checking the first screenshot I shared shows the Recording tab open with Disabled Devices selected. Only the two Realtek USB microphones appear, and there’s no Stereo Mix visible.
The guide mentions:
From the first time I checked Show Disabled Devices and until now, it has been over a week and one cold boot each day (I completely shut down my PC before going to sleep).
Since I just woke up, I haven’t had time to install software or update the OS. I’ll address this later and share my findings then.