Question about power/current in monitor cords?

Hey guys quick question I have noticed something at first by accident and now often, Does a DP/hdmi/DVI cord carry a current/power/static in it? or can it? The reason I ask is the other night I was plugging up my mini itx build at work and I went to plug in the HDMI cable to it and I noticed a soft blue electric almost static like light when the metal from the HDMI cable touched the metal backing of the GPU.

I thought well this isn't good so I bought a new cable thinking the old one might be bad right? (this was last night mind you) So today I get home and I am undoing my DVI cable from my main pc to hook up a club3d DP cable gold plated etc. I noticed that same blue tiny light as it was dark is this normal? I touched it to the case a few times / back of the gpu and it stopped so I was thinking it was static build up possibly? and that worries me as I know how sensitive hardware can be!


Is there any precautions I can take personally to prevent this? Or should I be worried about premature hardware failure due to this? or am I just going crazy in the end?

P.S. The cable at work was a HDMI to DP cable(insignia) Monitor end was hdmi, gpu end was DP, if that helps any.

P.P.S. Thing I noticed was the cords was plugged into monitor and they was powered and both machines are powered by evga supernova PSU's as well as plugged into a surge protector and as far as I know are grounded out.

Ok so I am not going crazy then thank god lol, I was worried I do that a lot... Thank you guys!

https://www.amazon.com/Club3D-Displa.../dp/B07DX9CJFY
was the DP cable and the insignia cable DP to hdmi was just one from best buy.

I seen a video on youtube I cant find now and the cable was providing power to the motherboard from the monitor and I thought of this but I noticed this tiny faint blue static like ness rather it touched the metal on the monitor or the back of the GPU plating/chassis sorry if repeating oneself. Today though was first time I noticed it at home and a few days ago at work, the monitor did have power. Tonight I will test it again with the PC unplugged at work to see if I notice it again and report back. It seems like if one has power I notice it on the other end.

Yes, it is static build up on the plastic components. Whilst the metal bits on each box will be grounded there is large chunks of plastic where charge can build up.
This can simply be due to your clothing, particularly with synthetic material/fibres, unsurprisingly.
Removing the power cord means the item will not be grounded. That does not stop charge building up on a plastic case from your clothes/touching etc.

All very fascinating possibilities. Google ground loop.