Using mousescoll makes noises in my pc?

[Vegeta]

Hi, whenever I use my mousescroll it also creates the same noise within my pc somwhere, im guessing somehow one of the fans inside my fan reacts to me scrolling onscreen? I was wondering if anyone else have ever experienced this and whats it down to?

 

[Vegeta]

It happens both when I use my wireless mouse or normal mouse.

 

[Vegeta]

Ok muted the line in, it happens once every while no always so not sure if its fixed it.
I've got a Xpro 460W psu, considered one of the better PSU but it could be down to that why not.