To exclude the above causes, you can try to reinstall Conexant High Definition SmartAudio 221 by downloading it from the official, or perform a full scan with your antivirus product. Your computer has been infected by virus and the system does not function properly.Related registry entries of the program are corrupted.Some of the program files have been deleted mistakenly.Windows OS is unable to locate the default uninstaller of the program.Conexant High Definition SmartAudio 221 was not properly or completely installed previously.If you are unable to completely uninstall Conexant High Definition SmartAudio 221, the cause could one or more of the following situation: Why You Fail to Uninstall Conexant High Definition SmartAudio 221
Today let’s see how to correctly uninstall Conexant High Definition SmartAudio 221 in Windows, and I’ll also list the possible reasons that you can’t complete the removal. One of the most common problems computer users encounter is that a program can’t be removed.
How You Can Safely Uninstall Conexant High Definition SmartAudio 221 - Removal Tutorials
Source: If Windows Update sent you Intel Audio Controller version 9.
UPDATE : Windows Update KB4468550 now removes the driver automatically from systems that received it incorrectly. Your audio (speakers and headphones) should now work.When the driver is uninstalled, reboot your system.Check the checkbox as shown, so the driver will be removed.You will get a popup asking if you want to remove the driver too, as shown. If the driver version is 9., you have the driver that was sent to you incorrectly.
Look at the parent device - this will be called something like "Intel SST Audio Controller" (Intel Smart Sound Technology driver version 09.).From the View menu, choose Devices by connection.