Windows 10: No Audio Output Device is installed + Missing MMCSS

Hello, I'm a bit at my wits end so I hope someone can help me. The model I'm using is ASUS SF-314-52 if that is relevant.


I opened up my computer to find no audio working and a 'No Audio Output Device is installed' error above my sound control. Everything was working fine yesterday when I shut down the computer. There was a windows update available, so I installed that but nothing changed.


Following various guides and websites I've found that there is no "Sound, video and game controllers' section in my Device Manager.

The only related item is under System devices, Intel(R) Smart Sound Technology (Intel(R) SST) Audio Controller - it is marked with the following error: Windows has stopped this device because it has reported problems. (Code 43)

I've also discovered that I'm lacking the service Multimedia Class Scheduler, which is supposedly essential for audio? I see mmcss under regedit and System Drivers when I access System Information, but it's not under Services.


I have tried the following to no avail:

- Restarting my computer several times

- Installing any available Windows updates

- Updating, then reinstalling the one audio driver available

- Adding legacy hardware sound controllers and trying to update those (all give error Code 10)

- Using the inbox High Definition Audio Controller instead (the bang disappears but still no audio)

- Manually installing audio and chipset drivers from my manufacturer's website

- Running sfc /scannow

- Running DISM.exe /Online /Cleanup-image /Restorehealth

- Running chkdsk

- starting MMCSS from an elevated cmd prompt with 'net start MMCSS' (it says the requested service has already been started)

- When nothing else worked I also reset my PC (while keeping my files)


None of these has worked, and I feel like I've run out of options of things to try and unfortunately quite desperately need the audio to work on this computer, so if any advice is available it would be greatly appreciated. Thank you in advance to anyone who responds.

:)

 

No Audio Output Device is Installed

Hi,

You will need to select Windows 8 from the drop down list while installing the driver in compatibility mode.

I would suggest you to try setting the speaker as default audio output by following the steps below and check if it helps.

1. Right click on the sound icon on the right bottom corner of the taskbar.

2. Select "playback devices".

3. If "speaker" is not set as the default device, highlight it and click "set as default".

5. Save the changes.

Let us know the result.

 

No audio output device is installed


A screenshot of the Device Manager, Sounds section is still needed. Can't really offer a suggestion until I see what is showing there now.

e.g this is mine It shows AMD which the audio for HDMI, Realtek and Tranzport which is a wireless controller for my recording studio program.

 

No Audio Output Device is installed

The new system information file is here:
v2.zip

The device manager is still missing the sound section: