Motherboard emits buzzing noise when under load

[Androxd]

Hi,

When under load, my motherboard emits a buzzing noise. I think it may be either the PCI-E connector or the north bridge. It is not the CPU because when i put the CPU and not the graphics card under load, the noise is not there. But when the GPU is under load, the noise returns. I dont think that it is the PSU, because the noise seems to come from the motherboard, but i could be wrong.

The noise started to happen when about a month ago i installed a new graphics card, (for an unrelated issue) and ever since then the buzzing noise has been happening.

It is also not the new graphics card that i installed because i reverted back to my old gpu and put it under load and it was still making the noise.

PC Specs:
Intel i7 4770 (non overclocked)
16GB 1600MHz DDR3
NVidia GeForce GTX 1080 Founders Edition (the old GPU was a GTX 660)
Corsair CX750M PSU
Gigabyte GA-H81M-S2PV Motherboard

Do you have any ideas if im right about it being either the north bridge or the PCI-E slot, or if there might be any other cause?

(On a side note, i can't switch the position my graphics card is in because the motherboard only has 1 PCI-E slot, or rather it only has 1 slot that my GTX 1080 can fit in)

Any ideas are greatly appreciated.

 

[n0ns3ns3]

that's called coil whine from chokes (inductors)
it's harmless.
are you sure it's from MB ?

 

[Grugbug]

Sounds like coil whine.
I've heard a different PSU may help alleviate the whine. Do you have access to a different PSU for testing purposes?

 

[Androxd]

Sounds like coil whine.
I've heard a different PSU may help alleviate the whine. Do you have access to a different PSU for testing purposes?

that's called coil whine from chokes (inductors)
it's harmless.
are you sure it's from MB ?

I do and will try probably tomorrow. I wasnt sure it was coming from the MB but i didnt think it would come from my PSU as its basically as new as my gpu is. (give or take a couple of months, max 2) Thanks for the responses.

 

[Androxd]

After testing a new PSU the buzzing still occours. I think it could be a motherboard problem, and even if it is not, i have a new motherboard cpu and ram coming soon.