Yesterday the sound on my PC was working fine while my sister was using it. Then when I got on later that night there was no sound at all. The speakers are plugged in to the wall and back of the PC (onboard sound). I looked in the device manager and it said everything was working properly. Eets kind of annoying... any suggestions? (aside from asploding my computer to death and reinstalling drivers) Also, I checked the volume control and it isnt muted or turned down all the way. I have also tried other speakers/headphones in the same jack but no luck. Thanks.