Hello!

A service technician cleaned the dust from my desktop PC, the thermal paste got renewed and also a new SSD installed. However, after one hour a clicking sound started.

Here is a video with sound of the issue:

https://youtu.be/2Qj-LN3LcHA

Is this a cable hitting the fan? Or is this metal on metal?

How do I narrow down the issue?

I was able to supress the noise by putting socks below just on the right side of the PC cabinet so that the PC is at a 10° degree angle.