For a couple of weeks now I have had problems with my PC where 4 of the USB ports on the motherboard do not work, and the audio jacks on the front of the PC don't work. I sent it for repairs to the company I bought it from and they sent a new one. After installing it the same issue persisted and I sent it back along with my CPU and RAM. I just got it back a couple of days ago and the issue is still there. When I plug in my headset there is no sound coming and the PC doesn't even recognize the headset. The 4 USB ports at the back do not work when plugging in keyboard etc. In device manager there is also a little warning sign next to one of the USB root hubs.