Buzzing PSU when the mouse is moved

hey guys,
im new to this site and i think i need ur help.
i built a new computer about 3 months ago and it works.
although i have been having this problem with the PSU. everytime i move the mouse, it makes this really wierd buzzing sound. i've had a look around other sites and apparently it could be a problem with the bearings.
please help me out!!
 
ahh. kinda wierd seeing as i only built a new one a few months ago. i think im just gunna send it back and get a new one then. thanks for your help n e way.
 
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