Question Installed new NHD15s cooler, strange noise driving me insane

Jun 26, 2020
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Like the title says, I have recently bought an installed an NHD15s air cooler to replace my water cooler which stopped working. The temperatures are great, but there is a strange mid-high pitched vibrating noise that kind of oscillates really fast, think tinnitus like. It's not coil whine, the pitch is clearly audible, kind of like a D or E one octave high for those that have music knowledge. I have tried checking the screws, holding down surfaces, stopping fans, pulling things apart and re-seating them and the only time it stops is when the PC is off :(. Has anyone else ever had any experience with this?

My case is a Fractal Design Define S Black ATX Case, Window and my cooler is mounted vertically so that the air is being blown front to back if it helps.
 
Jun 26, 2020
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Sorry, I found the source of the problem and it was not the cooler after all, it was the gpu. I must have damaged it in some way as I was installing the cooler. I have another thread up in the gpu board.