Uninstalling the software available for RADC might seem like the best option here, but it is probably not the way to go. This is because Windows will detect that the software may have been uninstalled and then it will now reinstall the same all over again and this will not solve your purpose. So, the failproof way to go about this is to disable the HDA manager as Administrator. You can do this by directly going to your Device Manager and you will find the option there. This will stop the Microsoft OS from installing the RACD software automatically again and again.