I have been using this headset for about 2 years now. Now, the left ear has no sound. I thought this could be a hardware problem since I have all my drivers up to date and bunch of configurations I had found online. Can anyone teach me how to fix this one? I am quite unfamiliar with USB headsets and I still don't have the budget for repairing it to an expert nor for a new headset. Any advice is highly appreciated!