All of a sudden my pc has lost its sound. I am currently using a plug and play set of speakers that have been working for a while until now. I have checked all of the volume controls and they are all turned all the way up, the device manager says all sound drivers are installed and there are no updates available. I'm running out of ideas can anyone help? I also tested the speakers on my laptop and they work fine and I also tryied using headphones on the pc but still no luck.