Firstly I've been repeatedly DISABLING the following option in the BIOS;
Advanced > Onboard Devices Config > RGB LED Lighting "When system is in sleep, hibernate or soft off states"
The BIOS is simply not remembering this setting, and defaulting back to ENABLED on every reboot/power off which means the RGB effect is showing on the shroud all the damn time.
Secondly, I had to give up using the onboard Audio as after 15-20 minutes of music playback, strange glitches and playback errors would occur - using Winamp or other MP3 players had the same result. All drivers updated. I have now had to buy external USB soundcards to resolve this.
Not very impressed with this Motherboard to be honest.
Any tips - particularly for the BIOS problem - gratefully received.