When i bang on my desk though, the fan shuts up for a good 2-3 minutes. This has worked with every fan i have ever blown. Hmm maybe i should shut down my pc once every few weeks. Oh well. Just wanted to share this little tip for anyone with the same problem. Physical abuse does work sometimes

Just make sure you dont hit it too close to the pc as you could shake loose a capacitor or something. Wouldnt want you to blame me for destroying your pc.