After about an hour or so of being on, my computer will stop playing audio. It seems to happen randomly, and only comes back on when I restart, but it will go out again afterwards.
I have my PC connected to a monitor via HDMI, and a digital audio cable from the PC to a stereo. Neither output will play sounds from the PC, but both they can still play from other sources with no problem. I tried checking the drivers in the control panel and nothing seems to be wrong there.
I'm using Windows 7 Home Premium, Service Pack 1.
Any assistance on this matter is greatly appreciated. Thanks in advance.