Question PC occasionally making a buzzing noise (Sounds like from PSU)


Sep 3, 2014
I have had my PC for just under a year now (January) and have had 0 issues until recently. In the last month on a few different occasions (4) a buzzing sound has been coming from what sounds like my PSU. The first time I heard it was after playing New World and I was about to power down the PC. Other times are when my PC has put itself to sleep after I have left the room so it is off. If I unplug the power the sound will stop but switching off the PSU power doesn't do anything. It doesn't affect anything other than making the sound but obviously something isn't right - I can use the PC like normal otherwise. After about 10 minutes of the PC being unplugged if I plug it back in there will be no sound. I have used the PC like normal over the past month and it works completely fine other than the buzzing happening 4 times.

Below is a link to 2 videos, one the first time it happened when the PC was on, and one the 3rd time when the PC was off (after putting itself to sleep).


Any help would be appreciated about what it could be! I am not sure how to replicate the issue as it is seemingly random.
Thank you!

PC Specs:

CPU: AMD Ryzen 5 5600X 3.7 GHz 6-Core Processor
MB: MSI MAG B550M MORTAR Micro ATX AM4 Motherboard
RAM: PNY XLR8 16 GB (2 x 8 GB) DDR4-3200 CL16 Memory
SSD: Corsair MP510 960 GB M.2-2280 NVME Solid State Drive
GPU: NVIDIA GeForce RTX 3070 8 GB Founders Edition Video Card
PSU: Corsair TXM Gold 650 W 80+ Gold Certified Semi-modular ATX Power Supply