Razer Deathstalker Buzzing Noise

[Sub-Fizz]

My friend gave me his Razer Deathstalker and when ever I use the lighting it always has a buzzing sound in my headphones. The options, dim, normal and bright, has different sounds but when I put it as off it has no sounds at all BUT I cannnot see which key I am pressing. I need help!

 

[Reynod]

Best bet is to move the USB socket your using for your headphones and KB ... might reduce the interference.