Thx for all the replies.
AS the blocking methods did not work on my laptop (I have Windows 1909 PRO edition) I decided to go ahead anyway and update to 2004 using the online update method (https://www.microsoft.com/en-gb/software-download/windows10). I removed the blocking methods of GP & Registry before I started.
Before I started I disabled & uninstalled the Conexant driver then began the update. However, as I was logged into the internet the driver was automatically reinstalled shortly after the update commenced.
Surprisingly, I suppose, everything worked fine and I now have Windows 2004. The Conexant driver is installed so what are these warnings from Microsoft all about?
Also, my touchpad has not really worked for about 6 months but after the update it is fine.
This method worked fine for my HP Probook with Windows Pro and I even did not uninstall the Connexxant ISST Audio Driver. Only disabling it did the job. After installing Windows with the above mentioned update method, the driver was automatically enabled and every thing worked fine with the Windows 2004