I built my PC on the 25th of this year and today I noticed a noise coming from it. I opened the side panel to examine where the sound would be coming from and i thought it was one of the case fans but listened and it is clearly coming from the PSU. This is my first computer build. The PSU is a Corsair CX550M. I have a video of the sound. If anyone knows what this is please let me know, I would greatly appreciate it.
https://www.youtube.com/watch?v=kTOT0-MNv-o
https://www.youtube.com/watch?v=kTOT0-MNv-o