- PC from work
- Small company, no tech people
- PC is quite some years old
It must be hardware but I've opened the case and couldn't find anything that's loose (don't quote me on this). I think it comes from that big power supply thing in the bottom but I'm not 100% sure either.
I've made short video from the noise, you can find it here: https://streamable.com/81sxr
If anyone wants a hardware monitor print screen or any other info let me know.