Is anyone able to shed any light on an issue we have with our PC. We brought a gaming pc for a Christmas present for my son and it has NVIDIA and it say there is no output, we plug in headphones or speakers into the green port at the back of the PC and it says no device is plugged in when it is. I have tried uninstalling and reinstalling the drivers, updating the drivers etc etc but nothing works. we are at a loss, I'd never come across NVIDIA before until we got this pc. The guy we brought the pc off isn't being very helpful so now we are stumped as to what to do. It's not very good to have a gaming pc with no sound at all. I would appreciate any help anyone can offer.