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Z40-70 Windows 10 version 2004

2020-10-13, 13:59 PM

 I just made a success to upgrade Windows 10 from 1909 to 2004.  As you know, Windows 10 2004 has problems with Conexant audio drivers

has versions,, or through for chdrt64.sys or chdrt32.sys.




The Z40-70's audio driver is Conexant audio driver is that is one of them.  I do not want to wait to fix this problem by Microsoft and Synaptics.

I uninstall it from Audio inputs and outputs, Sound, video and game controller.

Then, Install Microsoft generic audio driver.  Now,  Microphone and Speakers both of Audio inputs and outputs has High Definition Audio Device and Sound, video and game controller also has High Definition Audio device.  Then, Upgrade Windows 10 version 1909 to version 2004.

The Mic is in next to camera stops working with Microsoft Generic Audio driver before upgrading.  Once it is upgraded to version 2004, Mic also works fine.

I'm very happy with it.




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Re:Z40-70 Windows 10 version 2004

2020-10-13, 14:12 PM

Hi tamachans,




Thank you for sharing your experience in updating your Windows build version.


I hope you enjoy the features you need from it.



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