Fan dying?

I'm hearing this noise from my computer. It sounds like one of the fans is not spinning properly and is scraping against something. It makes a plastic on plastic scrape sound. It sounds like it is coming from my power supply. What brands should I look at for power supplies? Right now I have a 400w. The current PS hasn't even been used for a year. Is there anything I should look at before just going out and getting a new PS?

Just get a new Intel certified 400W PSU.

Short story of good brands:

PC&C, Fortron, Enermax, Antec, Seasonic



long story:

http://www.hardforum.com/showthread.php?t=1000883

I don't know what happened, but it stopped making the noise by itself. Tempratures and fan speeds are all normal, so I'm not worried about it. *watches computer shut down*