[SOLVED] Hissing coming from motherboard upon certain actions

Jul 15, 2020
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Hello, just finished putting my pc together, basically just got a new gpu and it wouldnt fit in the other case i had so i had to move everything to a bigger one.

The problem is that now everytime I:
1-Move from one google chrome tab to the other.
2-Open a new progam
3-Click on something
4-And many other things like just using the computer
I can hear a very distinct and short "tzz" coming from my pc
I will clarify, it is not at all times or when i do every single action but I first noticed it cycling thru my chrome tabs and evrytime I did you could hear it.
Note that it did not make this sound before.

I dont have a speaker connected to the motherboard

Could it be the new gpu? (didnt have one before)

Also put in another psu, its not even 80 plus rated, maybe that?

The way I screwed the motherboard on this case ? (its an old one too)

It is not a fan nor the hard drive, its definitely coming from a non moving part.

Maybe its nothing serious, but I would love some opinions.

Thanks

Specs: (if they help)
I5 8400
Gtx 1650 super
gigabyte h310m-h