A trip or two through the troubleshooter may also be needed.
#Do i need intel smart connect technology install
I would suggest checking (and installing/re-installing) in the order shown below, and reboot after each install or de-install. This might take several passes on some devices to remove multiple (older) driver versions. I eventually uninstalled every single related device and its drivers and re-installed using "Search automatically". I tried that Conexant driver package, which I had tried before, and ended up in a far worse state than when I started. The HDMI audio hiccups remain even after a BIOS update to v1.15A.
I resolved that by uninstalling "Conexant ISST Audio" in Control Panel/Pregrams and features, rebooting, and then, in Device Manager, re-installing the same drivers on the now unconfigured device via "Search automatically". The internal microphone had also stopped working after the above, including the mute button (fn F10), and including the disappearance of the microphone mute option on the right-click menu for the tray speaker icon. I have not noticed a problem with the built-in spekers, but then I haven't spent lot of time using them. HOWEVER, if I mute audio after stopping a source, and then unmute it, it will USUALLY work again. This is true even when simply playing/stopping different albums or tracks in iTunes. In general, when playing one audio source, stopping it, and then playing another, the second source and any subsequent one will be silent.
Sometimes a speaker will work and sometimes not in successive tests of that speaker in the Control Panel/Sound configuration sequence. At the moment, I have "Conexant ISST Audio" driver version 9.0.183.0 () and "Intel(R) Display Audio" driver version 10.22.1.102 (), both directly from Microsoft auto-find and provided by Microsoft.
I have tried a variety of things, including uninstalling both the Intel and Conexant devices and their drivers (two different versions specified on the HP support site) and letting Microsoft reinstall and find the "best" drivers for both. Fall Creators Edition (1709) on a Probook 450 G4, BIOS version 1.14, then 1.15A.
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