CPU Fan Issue

KlinkB

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Jan 31, 2006

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Pittsburgh

• Feb 10, 2006

• #1

I got a new DFI motherboard today and when I plugged the cpu fan into the designated cpu fan plug on the motherboard I'd get a problem. The cpu fan spins up slow then it'll get to about full speed then it spins down and stops. I plugged it into the plug next to it and got the same problem. Next I plugged it into a plug at the bottom of the board and it worked fine. Anyone know whats going on?

 

metloaf

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Nov 23, 2004

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23.204.180.226

• Feb 10, 2006

• #2

Did you plug in all of the power connectors into the mobo as needed? On my NF4 UT Ultra -D it takes 4 power sources just for the mobo!

 

OP

KlinkB

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Jan 31, 2006

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Pittsburgh

• Feb 10, 2006

• Thread Starter
• #3

im almost positive..i mean i have it running right now, it works fine on the plug at the bottom of the board just not the top 2

 

Fathom1990

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Jan 10, 2005

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Not here

• Feb 10, 2006

• #4

There are options in BIOS on the Ultra-D that mess with the fan speed depending on temperature, however I think they only apply to specific fans and therefore specific fan plugs. My Delta Focussed Flow spins up to max on startup, but on POST it slows right down. Your chip might be cool enough so that according to the default BIOS settings it doesn't need to run.

 

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KlinkB

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Jan 31, 2006

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Pittsburgh

• Feb 10, 2006

• Thread Starter
• #5

that might be it ill have to check it out after im done installing windows..the fan does shut off right after it posts..we'll see

 

infinitevalence

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Nov 14, 2002

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Nashville

• Feb 10, 2006

• #6

Yep thats normal, the fan will spin back up when the CPU temp hits a min point. You can turn it off in the bios, but dont freek out, aslong as it spins up then you know its working.

 

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KlinkB

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Jan 31, 2006

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Pittsburgh

• Feb 10, 2006

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• #7

thanks for the help guys..it gave me a real scare lol

 

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KlinkB

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Jan 31, 2006

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Pittsburgh

• Feb 10, 2006

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• #8

that was it! thats a crazy setting in the bios..never seen that before, just glad its all good

 

Know Nuttin

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Mar 25, 2004

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Ontario, Canada

• Feb 10, 2006

• #9

Yep. The CPU fan and Fan 2 header (the one just above it on the board) are controlled by the motherboard.

 

I

ivory

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Feb 2, 2006

• Feb 14, 2006

• #10

KlinkB said:

that was it! thats a crazy setting in the bios..never seen that before, just glad its all good

Click to expand...

You think thats crazy? I had an ASUS board that had the option to turn off the fan when below a min temp. On cold boots, the bios turned off the cpu fan and then it halted the boot because the fan was not running!!