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Msi Z97 gaming 5, CPU fan strange behaviour?

post #1 of 8
Thread Starter 
Hello, I just assembled a computer with MSI z97 gaming 5 and 4790K. Upon powering it on, I noticed that the CPU fan doesn't start spinning properly, instead it has this pattern:

Tries to start spinning (doesn't actually spin, just attempts to) > Stops completely > Tries spinning again > Stops completely > Start spinning

I never witnessed such behavior from any computer I built in the past for my self. Is this normal with this board?
I also would like to mention that 2 of the CPU socket pins are slightly bent but everything works normally.

Things I have tried so far:
Down-dated/Updated BIOS
Changed CPU Fan Header Connector
post #2 of 8
I think it could be normal for haswell stock fan, someone posted a video Warning: Spoiler! (Click to show)
post #3 of 8
Thread Starter 
This is the exact same thing I am experiencing, I am somewhat confused because I just bought these things and don't want any trouble as I plan to run this PC for the next 4-5 years at-least, Thanks for your reply, lets see if anyone here with Haswell system could confirm this happens to them as well and is indeed a normal behavior.
post #4 of 8
Welcome, and fwiw in the video description he has a link to another vid with upgraded noctua L9i for comparison. I didn't notice the 2 step start stop for that.
post #5 of 8
Thread Starter 
Yeah I checked that too, just waiting for someone with haswell to shine some light on this smile.gif
post #6 of 8
Put fan CPU on turbo mode/silent in bios. Or connect fan on PSU directly.
Edited by AndRicard - 7/30/16 at 7:23am
post #7 of 8
Thread Starter 
I have tried connecting the fan directly to PSU, does the same thing. Tried my old core 2 duo's stock hsf and it worked without issue. At this point i am pretty much sure that the fan is the culprit.
post #8 of 8
Thread Starter 
Alright guys, someone on the Intel's processor forum confirmed that all the fans made by nidec usually exhibit this behavior. Foxconn and delta fans doesn't do this. Mine is Nidec, thanks for the replies.
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