As you are using NVIDIA for audio and HDMI video, from your spec's, I would say that is part of the problem. Change the default audio playback device back to "Speakers" (the motherboard audio) for testing and then see if this happens.
What is in the startup? Temporary disable any start up item that is not needed (e.g. Skype, many programs) in case one of those is causing the problem.
Internal routing of cables was a known issue on a Dell desktop and was causing noise. Changing the routing of the front panel audio cable fixed that.
I don't really have much on startup only the essentials like Intel,Malwarebytes,Realtek HD Audio and Steam Client. Why does it only happen on this headphone if the routing of the cables cause the static?
The cable routing is just a thought, may not apply but look at it anyway.
Different headsets have different impedance (AC resistance) loads. May be the impedance difference is causing the problem? I'm going out on a limb with this one, but I've seen (heard) differences in headphones with different impedances in my home recording studio.
Just checked the routing of the cables, no problem whatsoever. I forgot to add I don't even know if this matters but my brother's PC that I have tested the headphone on has an ASUS motherboard but same realtek driver version. Should I buy a USB soundcard audio adapter?
You can try a USB sound adapter, to see if the problem is your Realtek. I have Realtek on my PC and no problems. However, I rarely use it as I have a recording studio and use recording studio equipment for audio.
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