Thank you for contacting the Intel community.
Please bear in mind that your best contact support is with your computer manufacturer as they are more familiar with your system and how all the components interact with each other.
Intel sells products to various OEM’s (Original Equipment Manufacturers), who then integrate them, with other system components (power supplies, disk drives, add in cards, software, etc). These components may be customized to the OEM’s specifications.
However, you can try installing the graphics driver from the Intel website, the graphics driver contains the audio driver and when you install the graphics driver you are installing the audio driver as well.
You can download the graphics driver here:
Intel® Graphics Driver for Windows* [15.45]
I suggest to uninstall the graphics driver you already have installed and the audio driver, after that you can go ahead and install the Intel® generic driver from the link above manually, please check how to Manually Install an Intel® Graphics Driver in Windows® 10 and Windows 8*/8.1*
There is also a possibility that the audio output is defective and you will need a replacement for the unit.
thanks for your answer. I have tried to do as suggested, but apparently it did not work. Here what I did in detail:
1) I've uninstalled via device manager Realtek high definition audio, Intel SST, and Intel HD Graphics 520
3) Tried to install "Intel Graphics Driver for Windows [15.45]" (exe version). Installation failed because of error "this driver has not been validated for this computer. Installation will be interrupted"
4) Used Intel Driver Update Utility to find proper driver; two matches after scan, but again the same error during installation
5) Reboot; after rebooting the laptop is back to the initial state
I am not sure what I did wrong and why I can update Intel drivers
Thanks for the information, try to install the driver manually as it shows on the link above, you will need to use the zip file to do manual installation and not the exe file.
Uninstall the old driver again and do not restart your system, also disconnect the internet to avoid Microsoft to push a driver update.
I’m following on this post to ask you if you were able to install the driver or if the issue still persists, if the issue still persists I would strongly recommend contacting your laptop manufacturer as they are more familiar with your system and how all the components interact with each other.
I apologize for the lack of answer, but I had a quite busy time.
Regarding the issue: I have tried to first uninstall Intel HD Graphics 520 via device manager, but after about 1 min my system automatically reinstall it. So I just uploaded (this time successfully) the driver to the last version available on the Intel website, but it did not fix my initial problem with the microphone (which is still controlled by Intel SST). As suggested, I will also try to contact the laptop manufacturer.