I have an ASUS P8Z68-V LX motherboard and the motherboards audio ports are not working.
I have always used HDMI for sound since my display has built-in audio but I recently purchased
Logitech Z506 speakers and have been having some issues. The speakers work fine when hooked
up to my iPod but do nothing when connected to my computer. My PC recognizes them being connected
and I can see them under audio devices but there is no sound.
You didn't specifically mention this, so I have to ask...
Since you were using the GPU & HDMI for your audio output, the drivers you installed for the GPU also took care of the audio. So, now that you have external speakers, did you install the drivers for the speakers?