What is this awful sound coming from CPU / GPU area?

This is super annoying. I bought a gaming PC for my wife. It runs fine, but it makes the most annoying sound (cherping, ringing, whistling?) constantly. In the attached video, I move the camera around to various parts of the computer. Sounds like possibly the CPU or GPU?

FWIW, I have tried stopping the fans, and it does not sound like a bearing issue.

Intel i5-7400
NVIDIA GeForce GTX 1060 3GB
1 TB Magnetic HDD
Windows 10

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Clarification Request
I didn't hear the PSU on camera

they can also make that noise. Seemed loudest at the CPU on what you did record.

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make a paper tube

about an inch round, tape it. Put one end to ear and move around the inside, you will find the noise. What I use is that clear vinyl tubing, like for fishtanks, one in ear and move the other around to finely locate the sound.

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