Perhaps its your psu or the woofer assuming you have one. Not 1 week before, there was a strong buzzing noise, in fact if you stayed for about 10-20 minutes inside the room, after that your head started aching.
Turns out it was the woofer. Some screws had gone loose, by the time i gave them a push with the screwdriver the sound was gone.:cool:
the sound appers on my speakers, and on my headset. the sound is only there when i`m playing games. no sound at all when using spotify, youtube or whatever. i got no mic plugged into my computer. i will check all connections and check over the hardware 🙂 going on vacation now, will do some research in 2 weeks or so!