PSU noise

[Gleran]

Hi, I've recently built a new PC and I'm having trouble with noise coming from the psu. 

 

This noise happens only when I switch on my room air condition and occcurs both when the PC is switched on and off (PSU still switched on in both cases).

 

Does anyone have an idea what this is, if it's dangerous to my components or how to fix please ?

 

Thank you!

[Windows7ge]

Is it a constant buzzing sound? That's the copper coils inside the PSU vibrating rapidly. It shouldn't hurt anything but the fact it occurs when your AC is on is strange. The best solution I have is plug your computer into a different circuit if it concerns you that much. Hopefully your room is made up of at least two separate electrical breakers moving the system to a different one will make it independent of your AC unit and should prevent your PSU from buzzing.

[Gleran]

Unfortunately it is not as I had a previous psu with coil whine so I am able to tell the difference (it was a corsair tx850). My current one is the EVGA SuperNOVA G2 850w. Anyway the sound is not buzzing and is more like a medium - high pitch noise  and is not sharp. It has been worrying me as I do not want to damage any of my brand new components . I will try your suggestions and hopefully my room is like you said or I will even try moving my pc to different rooms to test. Thank you I will try to report back with my findings the first time I get a chance !