I just finished my build and everything works fine, drivers installed and ran a youtube sound test and worked fine but soon as I click on the little speaker on the task bar to adjust system sound the sound cuts out and the speaker turns into a red x. when I right click to open sound devises it sometimes shows devises and sometimes shows none and says no devices installed....im confused...the motherboard is msi z87m-g43 w integrated sound and sound blaster cinema software installed as well as realtek hd audio drivers...plz help ty