As many others have recently posted, I have experienced a sudden loss of onboard audio devices - the speakers and the headphone jack no longer work. I can still connect to audio via Bluetooth and HDMI. I have performed all of the diagnostics through HP and Windows but they do not detect a problem.
As far as I can tell, this has happened since an automatic driver update from Windows. I rolled back all possible audio drivers to no avail. I performed a system restore which temporarily solved my problem, however I wasn´t quick enough to disable to automatic driver updates, and now I can now longer use an old enough restore point, one before these drivers where installed. I prefer not to reinstall Windows, however this is looking like my only option until there is a new update rolled out.
Windows 10 automatically updated a driver called "Sound Research Corp. - SoftwareComponent - 126.96.36.199". This version is the cause of my loss of audio. I was unable to revert this driver to an older version, so I decided to delete the driver entirely. Upon restarting the computer, Windows shows in Device Manager, under SoftwareComponents - Sound Research Audio Effects Component - version 188.8.131.52. I now have full audio capabilties.
Hopefully this is helpful for anyone else having this problem!
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