I'm assuming you updated your driver via Toshiba's website.
What may help, would be to download the executable for Audio, then:
- Via Device Manager, fully uninstall the Conexant Smart Audio HD suite
- Restart computer
- Locate the Executable installer for Audio and right-click and choose Properties
- Select the Compatibility tab
- Set the compatibility to Windows 7 or Windows 8.1
- Apply change
- Now right-click the executable again and this time select Run as administrator
You could also try the Audio Troubleshoot tool built-in to Windows 10:
- Right-click on Start and select Settings
- In the Windows Settings window select Update & Security
- On the left side select Troubleshoot then on right side run the Playing Audio troubleshooting tool.