I just bought a socket 478, Intel i865 chipset motherboard as a
replacement for an Asus board that seemed to have a failed AGP
slot. The Intel board is apparently new, a Gateway OEM board,
ordered from PC Parts Unlimited... http://www.pcpartsohio.com/BookDetail.aspx?item_id=852
I installed the board, and hooked up everything 100%, confident
that it would have no problems. But low and behold, as it was
starting to boot into Windows, I watched the CPU fan spin down to
0 RPM. I shut it down immediately and started the PC again and it
of course did the same thing, CPU fan came on with everything
else, but then spun down after running for about 3-4 seconds. The
CPU fan spin down seems to have no immediate affect on the rest of
the system. It would be happy to boot up into Windows if I let it.
I disconnected the case fan and hooked the CPU fan into the case
fan header, and it still did the same thing. I completely removed
the board from the case, layed it on a non-conductive surface, and
powered it up. Still the same thing. I removed the heatsink/fan
and plugged it into a spare fan header on an old 440BX board, and
it ran fine. This heatsink/fan came with a retail boxed P4 CPU.
I've tried both an Antec Basiq 500W, and Thermaltake 430W PSU just
in case someone thinks its the power supply.
Its strange that the CPU fan will shut down no matter what header
it is connected to. On at least one occasion both the CPU fan and
case fan spun down. It may be doing it every time, I don't leave
it on long enough to watch the case fan spin down all the way.
I'm thinking I will have to send the board back to PC Part
Unlimited. I plan to email them first to see if they have any
suggestions.
E wrote:
>
> Hi
>
> I just bought a socket 478, Intel i865 chipset motherboard as a
> replacement for an Asus board that seemed to have a failed AGP slot. The
> Intel board is apparently new, a Gateway OEM board, ordered from PC
> Parts Unlimited...
> http://www.pcpartsohio.com/BookDetail.aspx?item_id=852
>
> I installed the board, and hooked up everything 100%, confident that it
> would have no problems. But low and behold, as it was starting to boot
> into Windows, I watched the CPU fan spin down to 0 RPM. I shut it down
> immediately and started the PC again and it of course did the same
> thing, CPU fan came on with everything else, but then spun down after
> running for about 3-4 seconds. The CPU fan spin down seems to have no
> immediate affect on the rest of the system. It would be happy to boot up
> into Windows if I let it.
>
>
> I disconnected the case fan and hooked the CPU fan into the case fan
> header, and it still did the same thing. I completely removed the board
> from the case, layed it on a non-conductive surface, and powered it up.
> Still the same thing. I removed the heatsink/fan and plugged it into a
> spare fan header on an old 440BX board, and it ran fine. This
> heatsink/fan came with a retail boxed P4 CPU.
>
> I've tried both an Antec Basiq 500W, and Thermaltake 430W PSU just in
> case someone thinks its the power supply.
>
> Its strange that the CPU fan will shut down no matter what header it is
> connected to. On at least one occasion both the CPU fan and case fan
> spun down. It may be doing it every time, I don't leave it on long
> enough to watch the case fan spin down all the way.
>
> I'm thinking I will have to send the board back to PC Part Unlimited. I
> plan to email them first to see if they have any suggestions.
>
> Thanks in advance for any advice
> Eddie
>
If the board is worth keeping, you could bypass the powering issue,
with a fan adapter cable.
This one solves only the powering issue, and doesn't solve the need
for the motherboard to get a fan RPM signal. The idea is, to get
+12V and GND from a Molex disk connector, and onto an LP3.
This discontinued product from Antec, has two fan connectors per
Molex power connector. The male three pin fan connector, provides
+12V and GND to the fan, so it will run at full speed. The female
connector, with the one white wire on it, carries the RPM signal.
You plug the female, to the CPU fan header. By doing that, the
RPM signal from the fan, is received by the BIOS. Some BIOS check
for an RPM signal, and shut off the motherboard in a few seconds,
if no CPU fan RPM signal is detected.
On Thu, 12 Jun 2008 22:41:24 -0400, E <eddie180@xlxoxcxaxlxnxextx.com>
wrote:
>Its strange that the CPU fan will shut down no matter what header
>it is connected to. On at least one occasion both the CPU fan and
>case fan spun down. It may be doing it every time, I don't leave
>it on long enough to watch the case fan spin down all the way.
>
>I'm thinking I will have to send the board back to PC Part
>Unlimited. I plan to email them first to see if they have any
>suggestions.
Could this be a feature of the board? My mb will spin the fans down
if the CPU is not too hot. The option can be disabled in the BIOS.
--
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(")_(") their inaction to the problem. I am blocking most articles
posted from there. If you wish your postings to be seen by
everyone you will need use a different method of posting.
See http://improve-usenet.org
"E" <eddie180@xlxoxcxaxlxnxextx.com> wrote in message
news:Icqdnf-PldY2QszVnZ2dnUVZ_sDinZ2d@posted.localnet...
> I installed the board, and hooked up everything 100%, confident that it
> would have no problems. But low and behold, as it was starting to boot
> into Windows, I watched the CPU fan spin down to 0 RPM. I shut it down
> immediately and started the PC again and it of course did the same thing,
> CPU fan came on with everything else, but then spun down after running for
> about 3-4 seconds. The CPU fan spin down seems to have no immediate affect
> on the rest of the system. It would be happy to boot up into Windows if I
> let it.
Non-issue.
My AMD dual core Opteron machine does the same thing. The fan is temperature
controlled and only comes on occasionally. The fan runs full speed while the
BIOS starts the PC, but once that's happened the fans spin down and Windows
loads fine.
What you need to worry about is if the heatsink is getting very hot, or if
the BIOS temperature monitor shows the CPU temps shooting up.
Calab wrote:
> "E" <eddie180@xlxoxcxaxlxnxextx.com> wrote in message
> news:Icqdnf-PldY2QszVnZ2dnUVZ_sDinZ2d@posted.localnet...
>
>> I installed the board, and hooked up everything 100%, confident that it
>> would have no problems. But low and behold, as it was starting to boot
>> into Windows, I watched the CPU fan spin down to 0 RPM. I shut it down
>> immediately and started the PC again and it of course did the same thing,
>> CPU fan came on with everything else, but then spun down after running for
>> about 3-4 seconds. The CPU fan spin down seems to have no immediate affect
>> on the rest of the system. It would be happy to boot up into Windows if I
>> let it.
>
> Non-issue.
>
> My AMD dual core Opteron machine does the same thing. The fan is temperature
> controlled and only comes on occasionally. The fan runs full speed while the
> BIOS starts the PC, but once that's happened the fans spin down and Windows
> loads fine.
>
> What you need to worry about is if the heatsink is getting very hot, or if
> the BIOS temperature monitor shows the CPU temps shooting up.
>
>
Thanks for the reply. I think you hit the nail on the head.
I just received an email back from PC Parts Unlimited's tech
support, and they said the same thing. That the CPU fan speed only
runs when the BIOS senses that the processor is starting to get a
little warm. I didn't think hardware of this vintage with a P4
would have this feature, but there was a hunch in the back of my
mind (for some reason) that it was a simple BIOS feature. But I
was afraid to leave it on long enough to check. I haven't tried
the board again since I just learned this. Hopefully thats all it is.
darklight wrote:
> i have had this problem before,i would try shorting the reset pins. you
> reset button might be faulty
I did read something to this affect on a web board. But the board
will do this with no front panel switches connected. See my reply
to Calab. It may be just a BIOS setting, as tech support has
recently advised.
Mark wrote:
> On Thu, 12 Jun 2008 22:41:24 -0400, E <eddie180@xlxoxcxaxlxnxextx.com>
> wrote:
>
>> Its strange that the CPU fan will shut down no matter what header
>> it is connected to. On at least one occasion both the CPU fan and
>> case fan spun down. It may be doing it every time, I don't leave
>> it on long enough to watch the case fan spin down all the way.
>>
>> I'm thinking I will have to send the board back to PC Part
>> Unlimited. I plan to email them first to see if they have any
>> suggestions.
>
> Could this be a feature of the board? My mb will spin the fans down
> if the CPU is not too hot. The option can be disabled in the BIOS.
>
Yes, according to a recent reply from there tech support it is.
Haven't tried it yet. Hopefully thats all it is.
Was ignorant of this before, and so afraid to burn up the little P4.
On Thu, 12 Jun 2008 22:41:24 -0400, E
<eddie180@xlxoxcxaxlxnxextx.com> wrote:
>
>Hi
>
>I just bought a socket 478, Intel i865 chipset motherboard as a
>replacement for an Asus board that seemed to have a failed AGP
>slot. The Intel board is apparently new, a Gateway OEM board,
>ordered from PC Parts Unlimited...
>http://www.pcpartsohio.com/BookDetail.aspx?item_id=852
>
>I installed the board, and hooked up everything 100%, confident
>that it would have no problems. But low and behold, as it was
>starting to boot into Windows, I watched the CPU fan spin down to
>0 RPM. I shut it down immediately and started the PC again and it
>of course did the same thing, CPU fan came on with everything
>else, but then spun down after running for about 3-4 seconds. The
>CPU fan spin down seems to have no immediate affect on the rest of
>the system. It would be happy to boot up into Windows if I let it.
>
>
>I disconnected the case fan and hooked the CPU fan into the case
>fan header, and it still did the same thing. I completely removed
>the board from the case, layed it on a non-conductive surface, and
>powered it up. Still the same thing. I removed the heatsink/fan
>and plugged it into a spare fan header on an old 440BX board, and
>it ran fine. This heatsink/fan came with a retail boxed P4 CPU.
>
>I've tried both an Antec Basiq 500W, and Thermaltake 430W PSU just
>in case someone thinks its the power supply.
>
>Its strange that the CPU fan will shut down no matter what header
>it is connected to. On at least one occasion both the CPU fan and
>case fan spun down. It may be doing it every time, I don't leave
>it on long enough to watch the case fan spin down all the way.
>
>I'm thinking I will have to send the board back to PC Part
>Unlimited. I plan to email them first to see if they have any
>suggestions.
>
>Thanks in advance for any advice
>Eddie
>
>
Check your bios for fan throttling settings. What you see
occuring is usually due to a fan throttling setting, set to
aggressively for the particular fan that is attached. The
resolution is to turn off the throttling altogether or set
it to a lower temp, and/or higher percentage or ratio.
Of course if worst came to worst you could get the adapters
another poster mentioned.
E wrote:
>
>
> I installed the board, and hooked up everything 100%, confident that it
> would have no problems. But low and behold, as it was starting to boot
> into Windows, I watched the CPU fan spin down to 0 RPM. I shut it down
> immediately and started the PC again and it of course did the same
> thing, CPU fan came on with everything else, but then spun down after
> running for about 3-4 seconds. The CPU fan spin down seems to have no
> immediate affect on the rest of the system. It would be happy to boot up
> into Windows if I let it.
>
>
The spin down was in the motherboard design and can be changed in
the motherboard firmware as mentioned by other posters, and PC
Parts Unlimited Tech support.
CPU and case fan spin down while running 
Linear Mode
