Old realtek or maxxaudio drivers/software preventing new versions from installin

I recently took my hdd out of a dell that had realtek audio with maxxaudio to detect when a headset is plugged in, and installed it in a newer dell desktop. 

I've tried everything typical, uninstalling, reinstalling, drivers, software, various device manager entries. But the newer software and drivers won't install and I can't completely get rid of every bit of the old stuff (based on task manager startup tab).

I need a way to totally clean out the registry and driver storage folders and possibly other places of the old drivers, service, software I think. 

Can anyone help?

Thanks