Haserath said:
Have you checked outside? Sounds like the mothership is landing.
That really is strange... Have you checked the PSU fan to see if it's fine? I don't know what it could be, maybe someone else could help with this?
Well everything does power on and when it is powered on you can't hear it.
Alos in this recording I held the microphone right up to the back of the psu with the computer turned off and only the PSU turned on.
Thank you so much Haserath, the first person who could be bothered to at least post something.