Every time there are things moving on my screen, this very faint but noticeable buzzing noise comes from my PSU. It happens with things like watching videos, scrolling down webpages, GIFs being present on the screen and even small things like CSS and Javascript animations on webpages and switching tabs. It does not happen with things like mouse movement, menu navigation or typing however.
I built this PC about 5 months ago and it didn't have this issue. It would only make a vaguely similar noise when under extreme load, but not as noticeable as this one now. This only started happening about a month ago and for no reason that I can think of. It doesn't seem to be affecting performance and hasn't given me any crashes; all it is at the moment is a slightly irritating sound that I would like to get rid of.
This is what the buzzing noise sounds like, most accurate with earphones on about 14 Windows volume: http://vocaroo.com/i/s0UjdJ5jcvHR
Above: idle voltages (left), voltages during buzzing (right)
Relevant specs:
FX-8370E @ 4.3 GHz (1.360V)
MSI 990FXA Gaming Edition
AMD R9 390 (Stock)
Seasonic Platinum Series 1200W
I built this PC about 5 months ago and it didn't have this issue. It would only make a vaguely similar noise when under extreme load, but not as noticeable as this one now. This only started happening about a month ago and for no reason that I can think of. It doesn't seem to be affecting performance and hasn't given me any crashes; all it is at the moment is a slightly irritating sound that I would like to get rid of.
This is what the buzzing noise sounds like, most accurate with earphones on about 14 Windows volume: http://vocaroo.com/i/s0UjdJ5jcvHR
Relevant specs:
FX-8370E @ 4.3 GHz (1.360V)
MSI 990FXA Gaming Edition
AMD R9 390 (Stock)
Seasonic Platinum Series 1200W