Sound Tap - Attack??

This morning I found my my computer's audio output was not working.

On investigation I found that the audio drives had been disabled and a program called Sound Tap was the only driver installed.

I had not installed this driver / program.

It allowed me to uninstall it but now I have no audio device.

My Realtek audio driver still exists on the hard drive but does not load, even when I try and open it.

Reboots don't reinstall it either.

 

Has anybody else had problems with Sound Tap?

Any ideas as to how I get my sound back?