Hi everyone, Let me start by explaining the problem that's occuring here, everytime a graphical processing application (a heavy one like games, ...) starts running, it starts making this annoying buzzing, humming sounds that won't stop until you stop the app. Now i'm pretty sure it's the gfx card causing this noise 'cause when I start my driver and test the 3D settings, the noise occurs till I stop the 3D settings. Now this might be the cause of some interference between my mobo (with onboard soundcard) / psu / wireless card, but to be honest i have no frickin' clue of what really could be the problem. Another weird thing is that if I wear headphones, i can actually hear the noise through my headphones and it coming out of my pc at the same time. Even when using a VoIP program, other people can hear this noise (and even louder than myself I believe) through their speakers, only when my mic is activated though. This problem has been occuring for about almost a year now, but i never really tried anything because it didnt bother me that much (as my music is always on), but it can't go on like that forever right? system specs: ati 4890 AMD X4 955 3.2 ghz Asus M4A79T Deluxe PSU: OCZ ModXstream pro 700W now i dont think the rest of the specs really matter ... I hope anyone can help, it would be really appreciated.