New CPU Fan makes noise on startup and out of sleep mode.

Hello,

My new CPU fan makes noise when it starts up (2 seconds of full speed fan ) and after waking out of sleep mode.

Why is that? Did i do something wrong?
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  1. It doesn't sound horrible or anything? It just spins up fast for a few seconds? Does everything run fine otherwise?

    We have some Lenovos at work that have always done that. I don't think it's a problem.
  2. Yes it works great, low temperatures.. my old CPU+Fan never started this way, so i wasnt sure it was normal. Thanks alot!

    Its from the i5-3350 P
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