Question Electric PSU noise

Sep 16, 2020
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Hello, recently i build a x299 pc with a msi x299 tomahawk, 7740x, gtx 960 and a 600w 80plus PSU.
There is a sound, an electric sound no coilwhine on the PSU BUT I NOTICED that, when i stress the cpu with CPU-Z
the noise stops inmediately. if you need a video i can upload later.
what can be the main problem? is not my first build, everything is well connected.
:L
 
Sep 16, 2020
2
0
10
Also, the PSU was with no usage for 1 month, then i connected to this pc and started with that. the sound is not from the fan, i disassemble the psu and comes from the integrated board of it. but when the cpu is full load the noise disapear