Buzzing when using microphone

Hi guys!

I have a Sony Vaio F laptop, that I have connected to its AC power adapter. I also have a analog headset, and whenever I talk through the microphone, the person on the other end hears a buzzing noise. Is there any way I can fix this issue?

I have bought an external sound card to see if that would fix the issue, but it did not. I also wanna note that when I UNPLUG the AC adapter and run straight off the internal battery, the humming goes away.

The AC Adapter I am using is 2prongs and it has a ferrite filter on it.

Is there anything I can do to fix this issue?

Its really bugging me!!!
3 answers Last reply
More about buzzing microphone
  1. Is it a factory Sony AC Adapter?
  2. I DO have the factory one, but it does not have the filter on it. I bought another one with the filter (both have the same issue)
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