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Error after replacing CPU fam


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#1 Madforit

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Posted 05 February 2013 - 02:44 PM

I have just changed the CPU fan in my HP a6455 and the new fan only has 2 wires whereas the old fan had 3..Now when I power up the computer says the CPU fan is not working/disconnected although it is clearly running ok,,,What is the other wire for - Is at an earth or some kind of sensor or maybe for speed control ??

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#2 flise

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Posted 05 February 2013 - 03:16 PM

i dont know what cpu fan you're using, but I had simular problem after I build my new PC this week. there was ''CPU fan error'' showing up every time i switched on the computer. I use noctua nh d14 2011 and the problem was coaused because as it says here:

http://forums.guru3d.com/showthread.php?p=4225685

this fan works slower on low cpu temperatures and motherboard is worried about that slow fans :) but it speeds up when it has to to keep the temp. right... so maybe you've the same thing

#3 hamluis

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Posted 05 February 2013 - 05:43 PM

FWIW: If you receive that particular warning...the system/CPU will overheat and the system should shut off at some point (to save itself).

I'd put the old fan back on or a suitable replacement, being careful to remove the old thermal grease and replace with a small amount of new grease.

Louis




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