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My fan is running fast


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9 replies to this topic

#1 newguy21

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Posted 23 February 2010 - 02:25 PM

So my computer issue is that the Case fan is running really fast and the green power light turns orange on startup

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#2 techextreme

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Posted 23 February 2010 - 02:27 PM

What make and model computer do you have?

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#3 newguy21

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Posted 23 February 2010 - 02:43 PM

Dell Dimension 8400 running XP Home

#4 techextreme

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Posted 23 February 2010 - 03:17 PM

Turn your computer on and look at the lights on the back. You will be looking for something that resembles this:

Posted Image

They will be labeled A, B, C, and D. Make note of the color of each light and tell us what they are.

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#5 newguy21

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Posted 23 February 2010 - 03:27 PM

no lights on any of the letters

#6 techextreme

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Posted 23 February 2010 - 03:31 PM

Pull the power cord on your computer.

Leave it disconnected from the power supply for at least 1 to 2 minutes. This will let any residual energy in the power supply dissipate.

Plug the power cord back in and once again try to turn your computer on. Look at the diagnostic lights on the back and see if you get any lights and also the status of the power light on the front of the machine.

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#7 newguy21

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Posted 23 February 2010 - 03:34 PM

Still nothing

#8 techextreme

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Posted 23 February 2010 - 03:45 PM

Open your computer and make sure all electrical connections are tight.

Re-seat your memory. Make sure there is not an overabundance of dust internally in your computer.

Then once again retry powering on your computer. If you are given the same results, it would be worth trying another power supply as that may very well be the culprit.

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#9 newguy21

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Posted 23 February 2010 - 03:57 PM

everything is seated properly and the power supply fan spins when it is turned on and the cpu fan is the one that spins so loud it sounds as if it is going to blow up and the power on led light is orange instead of green so i tried another power supply and it gave me the same thing im leaning toward a bad mother board does that sound like a reasonable assumption

#10 techextreme

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Posted 24 February 2010 - 07:58 AM

Yes, if you still get the same results from the machine with a different power supply, then your next step would be the motherboard in my opinion.

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