CPU Fan Failed

Hewlett-packard / Gg781aa-aba a6110n
December 30, 2009 at 16:17:35
Specs: Microsoft Windows Vista Home Premium, 2.3 GHz / 3581 MB
Hello All.

I bought a new CPU fan from Newegg. It's an Arctic Cooling Freezer 64 Pro. I installed it but whenever I try to boot my PC tells shows

ERROR: CPU Fan failed. Shutting down to prevent damage to CPU

The fan is spinning away nicely. I've researched a bit and found some little answers. One thing I've noticed is my new fan as a 4 pin power instead of 3. But it says it's backward compatible and I've plugged it correctly (basing on their website). I've also read that maybe I should change BIOS fan settings..but my BIOS has no Fan setting "page" whatsoever.

Here's my PC specs.

AMD Athlon 64 X2 Dual-Core 4400+ ,2300 MHZ
4 GB Memory
BIOS version : Phoenix Technologies, LTD5.13
Microsoft Vista Home Premium

Would appreciate any help. Thank you very much!

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December 30, 2009 at 16:30:04
Are you sure you plugged it into the CPU fan header & not one of the chassis fan headers?

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December 30, 2009 at 16:34:36
Of the 4 wires to this fan, one is power, another is ground, a third is for fan,speed detection and the last is the speed control. If bios cannot detect the fan spinning it shuts down to prevent CPU damage. Your motherboard obviously has only a three pin header for the fan. How do you connect the 4 pin fan connector to the three pin header?

Goin' Fishin' (Some day)

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December 30, 2009 at 16:51:52
I plugged it in on how the fan website told me to (where my previous fan's power was connected)

If this makes sense, it has a "guide line" so u wont connect it nwrong. its connect on the black, yellow and red cord

Sry..hardware noob

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Related Solutions

December 30, 2009 at 18:07:07
There wouldn't be a Fan setting "page" explicitly, but there should be a menu like where you can enable or disable cpu fan control. Look for something like PC Health or Hardware Monitor. You could disable cpu fan control but still enable thermal shutdown if the cpu overheats.

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December 30, 2009 at 19:46:31
Yeah. But ive looked at all the tabs I have in my Bios and for some weird reason I don't have any that says anything about Fan Speeds, tenperature's and such

Here is my BIOS version

Phoenix Technologies, LTD 5.13 10/29/2007

I also think thats the latest version they have for that particular BIOS

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December 30, 2009 at 21:09:20
Sounds like you have the CPU fan connected to an ordinary molex power connector.

The instructions you have must be generic fan connections. The CPU fan MUST be connected to the harder (plug) on the motherbaord near the CPU labeled CPU header. If you just replaced the fan on a heat sink you must have bought a case fan.

You need to get the proper fan for your heat sink. The RPM and CFM are matched to the heat sink. The fan you installed may not be any good and may be set to blow in the wrong direction.

Why are yu replacing the CPU fan anyway?

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December 31, 2009 at 13:35:07
This is the fan I bought


its a CPU cooler right? it's resting on top of my CPU (well, supposed to be). Or am I wrong and just reached the pinnacle of my idiocy?

I connected the 4 pin power to the plug where the previous fan was connected. Its labeled "CPU fan" in the mobo. I can also post a screenie of my mobo if that would help u guys

Thanks a lot for the replies. I really really appreciate it

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December 31, 2009 at 13:53:09
That's definitely a CPU cooler. Did you aplly a small amount of thermal grease first, and is the CPU cooler secured firmly to the motherboard ?

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December 31, 2009 at 14:13:47

The specs state the cooler comes with the proper amount of thermal compound applied.


Two things come to mind. First is the connector. You are supposed to connect ANY CPU cooler directly to the motherboard into the CPU fan header.

Second is that there may have been a protective film over the thermal compound that must be removed.

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December 31, 2009 at 16:54:16
OtheHill: Then of course applying extra thermal compound would not be a good idea. Some of these coolers come with too much thermal compound preapplied-I use one myself, though it hasn't caused me any problems and I doubt that's the OP's problem either.
Squall: In addition to removing the protective film over the thermal compound, make sure that you thoroughly remove the OLD thermal compound.

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December 31, 2009 at 20:04:58
Yeah. Even though I'm a hardware noob I think I did a good job connecting it to where it's supposed to be. Secured, fan on the right position, power socket on the right place (directly to the mobo where the old one was connected and labeled "CPU fan"), wiped the old fan's residue, no protective film etc. (the cool spins and all if that matters).

I also did some research before I came here and it seems like I'm not the only one with this problem


I think it IS a BIOS problem. Any tips about it?

Again, thanks everyone for the help! Really appreciate it :D

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