PSU making buzzing noise?

[LittleYo10]

Alright, so after I start up my PC it's completely quiet. Nothing is wrong. Browse the internet, play some League, it's fine. Once I started up Overwatch just now however it started making this weird buzzing noise. It even changes when I go from the play screen to the main menu... If I exit Overwatch it's fine. I tried stopping the fans for a second or two and the noise continued. It never did this till I got an R9 Fury. PSU is EVGA 750w bronze and cpu is i5-6500. Please help and thanks.

 

[Jasjar]

The buzzing noise is normal when the PSU is under load