Failed Audio question

I've been having some Audio issues lately with XBMC.
Everything works fine most of the time, but every now and then when I switch on the AVR+TV (PC is always on) XBMC reports a failure to initialize audio.
A reboot fixes it and I'm good to go for a random number of days.
What I have noticed about this problem is the following:
When working Windows reports my Audio device as Samsung (TV)
When not working Windows reports my Audio device as HTR-3064 (AVR)

I'm not at home at the moment so I unfortunately can't access any logs or things of that nature.

Things that I need to verify:
AVR Audio is set to AMP and not AMP+TV
CEC is disabled on both AVR and TV

I thought that this might be driver related so I grabbed the latest VIA drivers for my Asus P8H77-I (Windows 8 Pro).
After installing it I noticed that the device manager reported 2 audio devices:
High Definition Audio Device
VIA High Definition Audio
Disabling the VIA device removed all playback devices except the Samsung entry (which changes to HTR-3064) so I'm assuming the audio is from the Intel HD 4000?

This may or may not be related but I started having the audio problems after installed XBMC Launcher¿

Any idea how I can best go about solving the issue or at least more directly identify the problem?