No Audio Output Device is installed

[beepboop555]

Hi! I recently reset my laptop using a windows usb drive and since then I have not been able to get any sound from the speakers in my laptop. Here is what I have tried so far:

• Device Manager: there are no audio drivers listed, only a multimedia audio controlled listed under other devices. When I click on this it shows "The drivers for this device are not installed. (Code 28)". A few other drivers are listed here as well.
  • I tried updating this driver by scanning automatically --> "Windows could not find a driver for your device"
  • I tried Windows Update: I have installed all required updates, there are a handful of Intel drivers in optional updates but I have not installed these since the last time I tried to it made the keyboard and touchpad unresponsive which is why I reset the laptop in the first place.
  • I tried deleting the driver and restarting the computer: this only placed the mulitmedia audio controller back under other devices. 
  • HP.com does not list ANY software for my computer so I tried manually installing audio drivers for other hp spectre x360 listed and then repeating the above steps with no success.
• HP UEFI Hardware Diagnostics: I installed and ran the audio diagnostics in the UEFI Diagnostics boot partition with success, the audio functioned perfectly with no detected errors
• HP Support Assistant: I checked and am up to date with the BIOS
• External speaker: I tried usb headphones which also worked without error. 

So the speakers function, but this seems to be a driver issue, yet no driver seems to exist. Please share any ideas you may have for how to move forward, thanks!

[beepboop555 · Accepted solution]

(Solved!) I was able to get sound again by following the instructions here: https://h30434.www3.hp.com/t5/Desktop-Audio/No-audio-device-installed-no-audio-devices-shown-in-devi...

tldr: navigate to C:/SWSetup folder and going through each subfolder installing each driver with Device Manager open until the sound driver shows up as installed (for me this was sp110430 Conexant ISST Audio)

[Paul_Tikkanen]

You're going to need this driver for the other devices in your screenshot:

Intel Chipset Installation Utility and Driver

sp148947.exe

[beepboop555]

SP72025 (Intel Chipset Device Software) was in my C:/Swsetup folder which I installed before the conexant driver, will I need sp148947.exe as well? Going through all the installs within that folder did manage to resolve the rest of the Other Devices listed.

[Paul_Tikkanen]

The driver I posted is newer and if you already installed sp72025, and those devices in your screenshot were not installed by sp72025, you will need to install the driver I posted.