If your audio is currently broken, you may need to force a clean re-installation:
In mid-2018, Microsoft rolled out Windows 10 version 1803 (April 2018 Update) followed by version 1809 (October 2018 Update). These builds fundamentally changed how audio drivers interact with the kernel. Conexant, already in a transition phase (being acquired by Synaptics in 2017), failed to release timely WHQL updates. conexant media 7 3 2018 update extra quality
) for the latest verified audio driver, which is safer than relying on generic Windows updates. If your audio is currently broken, you may
