So this is my psu. http://www.bestbuy.com/site/insignia-520w-atx-power-supply-silver/5610116.p?id=1219144863171&skuId=5610116 Not the best but my older, better quality one fried when the power suddenly went out in my house. Ran to bestbuy and bought one of these. It's really a quiet, decent psu from my experience only recently I hear this feint, but noticeable rattling. It's very quiet but becomes more obvious when I play graphically intense games. It's sounds like a piece of paper being hit with a ceiling fan but very slightly. I often forget about it. Is there a way I can open it up and see if maybe a screw is lose? I opened up my pc and tightened every screw I could around the PSU but still there. It's definitely not supposed to make that noise, yet it doesn't sound like it's failing or anything like that. Only got it a few months ago.