Hi Jesse Williams,
We know Conexant only provide audio chip to manufacturers, and they do not released audio drivers to the public on their website, they will send it to the manufacturers. So most times, you need to download the conexant hd audio drivers from the computer manufacturers download center.
If you have already installed Windows 10 system for your Acer laptop/desktop, for updating conexant audio drivers for your old Acer computer, you can enter device manager to help you, like the image
TairikuOkami said. You can try to uninstall your conexant audio drivers first and then reinstall it.
If you want to upgrade your Acer system to Windows 10, it depends on your computer model, Acer released an article about models supports windows 10, you can view it from
here. After upgrade to Windows 10, the computer will automatically install the audio drivers. So you can test your audio drivers after the windows 10 is fully installed. If the audio has no error, I think you finished your work.
Wish this explain can help you.