u/Responsible-Fix-1111

My PSU fan keeps making this whirring sound above a certain speed (see & listen video). How do i fix this?

For more info: this is a DeepCool DQ850M-V3L. this unit is not over a year in age. i cant RMA this since i didnt buy directly from DeepCool and if it's not visible in the video, the warranty sticker is out. i cant dish out money as of right now, so i appreciate if someone can help me fix this as im stressing out so much about this lol