PSU makes a strange buzzing noise

rusgames2

Honorable
Jul 3, 2016
15
0
10,510
(In advance, English isnt my first language, hope i dont butcher it too much). Hi, my PSU has been making a buzzing sound this morning. The night before it was fine, but in the morning i could faintly hear a strange noise. I know its from the PSU, since thas where the noise is the loudest. I turned the PC off immediatly, tried itagain in an hours time and the noise is much more quiet, I dont hear it if i'm sitting normaly. But when i started Hearstone, it returned to being noticable.
https://drive.google.com/open?id=0ByOEhWF1ZgjjTW5WOE1WU0pJY0k, i recorded the curent noise (quiet), sorry for the fan sound, but the noise form th PSU is still noticable (I hope). https://drive.google.com/open?id=0ByOEhWF1ZgjjQnYyUWNiVXZHTmM is when its loud.
Should I be worried? Change the PSU fan? Replace the PSU entirely?. My PSU is new (3 weeks approx), its a EVGA Supernova 1200W P2 Platinum Modular Power Supply Unit. Thanks for any help.