So, my computer doing weird whistle sounds under big load. For example while playing BF5 the game shutters at the start. The whistling stops when my game micro lags and starts whistling immidetly when game runs smoothly. So, when game is lagged (idk if I can call it even lags its micro lagging) = no whistling sound. When games run smoothly I can hear it all the time. It perefectly line ups with game performence.
We're going to need a little more information from your end. Please list the specs to your build like so:
include the age of your PSU apart from it's make and model. To add, please add an audio/video clip of the noise that you're experiencing. You should also try and narrow down the source of your noise by using a sheet of A4 paper, that's been rolled into a cylinder, with one end held to your ear and the other end used as a probe to locate the origin of the sound.