White noise even when headset is unplugged entirely

[motza]

I'm trying to start streaming on twitch and maybe using obs for youtube as well but I have a dreadful white noise in my stream and I can't seem to fix it. I tried all I could think of, but even when i unplug the headphone/mic from my computer it still has the white noise! I don't know how to fix this and any help would be great.