Hi I am using a Dell Dimension 2400 and I have some kind of humming/buzzing noise on my mic. How can I fix that?Hi

Is this when using the front or rear mic input. And if you haven't already TRIED the rear port could you try that please.

There is only a red and green port and it is only in the back.3.5 mm port. I can show you in skype. Or any voice chat There is a blue and pink socket on the front at the bottom of the case by the USB sockets. Could you try those please.
It dosent have one. I have just figured this out It works perfectly when I put one of my hand in the back case then the hummmming is gone, I think its the radiation or something.Hi

Sorry it's under the front cover. But as you have found that by touching the case the hum goes. That suggests there is a grounding problem with the plug going into the socket . To fix that work the plug in and out of the socket a few times. If it is still humming then there could be cable damage between the mic and plug.

One common CAUSE of a hum for recording equipment is fluorescent lights are a #1 cause of humming with audio recording and amplification equipment. If you have any lamps with the new fluorescent LIGHTING or near by, I would shut them off and see if the hum disappears. What is grounding issue? And no I dont have a lamp.Hi

Have you tried the suggestions I made ?

A grounding issue is a generic term for there being a problem with the earth or ground SHIELD on the cable, or a bad connection in the mic socket.
You could try it as well with the usb adapter if you still have hum then the problem is in the headset. if not then the problem is with the mic socket on the dell.
   The mic only has 3.5mm ports.You haven't tried any of the suggestions...try it on another PC that has a rear Mic port...if it humms...return or replace it.dreadlyknife

The headset is supplied with both 3.5mm connections and a usb audio adapter. Hence the suggestion to try that adapter  isolating the COMPUTER audio connections. As is said he hasn't tried any of the suggestions...I didnt get a USB adapter, Do I change the outlet?