Noisy Computer Fan
Right now I have a fan on my computer that is so noisy that I can hardly think.  If you have this problem too, it’s nice to know that there is a solution that doesn’t require replacing the parts.  Essentially, you take the fan out and re-oil it  with either a syringe or a needle and some oil.  Here are the specific instructions to do so:
How to Oil a Video Card Fan
http://www.simplehelp.net/2008/08/26/how-to-silence-a-loud-video-card-fan/
Fans Without Bearings to Lube
I found out that my fan does not have bearings and thus this above tutorial didn’t apply to my situation. Â There were no screws to loosen to get the video card fan off of the card. Â I was able to pop out the fan and found that it was a magnetic fan. Â I washed off the dirt on the fan and took a brush (the one that cleans my shaver) to brush the dust bunnies that had lodged themselves into the cooling fins. I put a tiny amount of oil on the plastic part that connects the fan to the housing, also the rotating point for the fan. Once everything was cleaned out I pushed the fan back into position and re-inserted the video card into the computer. Â Note: make sure you make sure you don’t have any static electricity built up when you do this. Â Touch something metal to do this. Be careful re-inserting the card so that you don’t damage any of the connections. Once I restarted my computer it purred like a kitten, but quieter!
Power Supply Fans
You can oil a power supply fan just like you would a video card fan. Â See the link above.
If a power supply fan is still giving you trouble after oiling it, you can also buy one at radio shack (or a computer parts store) for ten or fifteen dollars and require it into the power supply. Â It’s quite simple, and there are only two wires. Â If you can match up the red ones and the black ones, you should be all set. Here’s video explaining how to do it: