Argh, cpu fan noise

so i've had my build for a few weeks now, the whole process went great, except...i'm starting to get fan issues.

for a cpu cooler i have the hyper 212 evo, great little unit, i love it. but there's an issue now, the fan that came with it has started to have an odd case of what i would presume to be coil whine. it's quite annoying. 

is there anything i can do to remedy this? or should i just look for a new 120mm pwm fan? if the second one is the best option, what would be a good, reliable, quietish fan that would work for this situation? 

thanks!

It could be a few things.  A wire, a label, or just something that's lightly touching the blades.  What I would check though is if the fan is just reaching a really high RPM.

you could replace the fan for a diffrent one i guess, a noctua NF-12 fans are realy silent, but they look ugly.

fans get coil wine?

he probably mean´s a bad bearing sound.