It getting way to complicated for something so easy.
1. Make sure the fan is the source of the noise.
2. Make sure the fan is installed properly, tight and clean.
3. Make sure nothing is hitting the fan blades.
4. If you have done 1/2/3 replace the fan.
5. Done
OK thank you for the help everyone
Okay, so i've isolated it to the front fan its from raidmax and here some photos of it and the photos of the fan with the weird lighting is of a similar fan in the same system. I have 5 fans. Sorry the pics are so bad. I tried using a flashlight and my nexus 7 doesn't take the best pictures sometimes.
Quote