Fix: Conexant ISST Audio not working in Windows 10/11

by Ivan Jenic
Ivan Jenic
Ivan Jenic
Troubleshooting Expert
Passionate about all elements related to Windows and combined with his innate curiosity, Ivan has delved deep into understanding this operating system, with a specialization in drivers and... read more
Affiliate Disclosure
  • Did you notice a Conexant ISST Audio with no sound after a Windows 10 update?
  • The same might occur for Conexant SmartAudio HD drivers, unfortunately, and it's quite common.
  • The main causes for Conexant ISST Audio issues are outdated drivers or some audio settings.
  • Using the right software to keep your computer up to date is crucial to avoid this kind of issues. 
Conexant HD Audio Problems in Windows 10

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Depending on your sound card or the current version of the sound driver, you can face some sound problems in Windows 10.

For example, users of Conexant SmartAudio HD Audio or Conexant ISST Audio noticed sound issues after upgrading to Windows 10.

If you’re one of them, we’ve compiled a few workarounds for this problem. Let us know which one worked for you.

Why am I having issues with Conexant ISST Audio driver on Windows 11?

If Conexant HD audio microphone driver isn’t working is not working on Windows 11, it’s possible that the driver is corrupted so it needs to be reinstalled.

Static noise in Windows can also be an indicator of a driver issue, so you might have to update your drivers to the latest version and check if that helps.

It’s also possible that you have issues with the sound card, and if that happens, you’ll get Failed to play test tone message on your PC.

What can I do if Conexant ISST Audio is not working?

  1. Update your drivers
  2. Disable audio enhancements
  3. Change maximum memory
  4. Change the default sound format
  5. Run the Audio Troubleshooter

1. Update your drivers

If you haven’t updated your drivers, we recommend you to head to the Device Manager and check for the updates of your drivers.

conexant hd update driver section

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You can choose to search automatically for an updated driver or browse the computer for if you have a driver file.

Follow the on-screen instructions and don’t forget to restart your computer. In some cases, a restart is required in order for the new driver to work.

Alternativelly, you can use a dedicated software that does this jobs for you, while also recommending the right updates. Keep in mind that such a tool will be useful for any future similar scan.

Some of the most common Windows errors and bugs are a result of old or incompatible drivers. The lack of an up-to-date system can lead to lag, system errors or even BSoDs.To avoid these types of problems, you can use an automatic tool that will find, download, and install the right driver version on your Windows PC in just a couple of clicks, and we strongly recommend DriverFix. Here’s how to do it:

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  3. Wait for DriverFix to detect all your faulty drivers.
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  6. Restart your PC for the changes to take effect.


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Disclaimer: this program needs to be upgraded from the free version in order to perform some specific actions.

Uninstall and reinstall the Conexant driver

  1. While in the Device Manager, expand the Sound, video and game controllers section.
  2. Right-click on the Conexant Smart Audio HD and click on Uninstall device.uninstall conexant audio driver
  3.  Now, go to View > Scan for hardware changes to reinstall it. Or use DriverFix for the same purpose. The latter will save you the time of searching for the right driver.

2. Disable audio enhancements

  1. Right-click on the Speakers icon in the taskbar and open Playback devices.playback-devices
  2. Open your default playback device, by double-clicking on it.
  3. Go to Enhancements tab and check Disable all enhancements.
  4. Click OK and restart your computer.

Now try if your Conexant HD Audio works, if not, try some of the following solutions.

3. Change Maximum memory

  1. Go to Search, type msconfig, and open System Configuration.
  2. Go to the Boot tab.
  3. Click Advanced options.advanced option boot windows 10
  4. Set Maximum memory to 3072 (this happens to be the best option).
  5. Restart your computer.

4. Change the default sound format

  1. Right-click on the Speakers icon in the taskbar and open Playback devices.
  2. Open your default playback device, by double-clicking on it.
  3. Go to the Advanced tab.
  4. Change the bitrate under Default sound format, until you find the one that’s working.default format speake
  5. Click OK.

5 – Run the Audio Troubleshooter

audio recording troubleshooter

Another quick solution is to simply run Windows 10’s built-in audio troubleshooter. To do this, go to Settings > Update & Security > Troubleshoot.

That’s it, we’ve already showed you how to solve Conexant HD microphone problems, and now, I hope this article will help you to solve sound problems, as well.

If you have any other Windows 10-related issues you can check for the solution in our Windows 10 Fix section.

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