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chipset heat sink not detected, system halted -- WHAT'S THE PROBLEM ???

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Martin (Martin Lee)

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Jul 21, 2006, 3:19:25 AM7/21/06
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Hello, my server cannot open, neither can I enter BIOS.

It said, "chipset heat sink not detected, system halted "

Please help, what's the problem ?

Thanks!

Martin


Malke

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Jul 21, 2006, 9:26:52 AM7/21/06
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Martin (Martin Lee) wrote:

The problem is exactly what the error message says - the heat sink has come
off the processor and the machine has shut down to prevent overheating. It
may be too late and the processor may already be fried, but you'll need to
open up the box, apply thermal paste, and reattach the heat sink and see.

Since you didn't understand this basic error message, call in a professional
computer repair person. I'm not saying this to hurt your feelings; just
being practical.

Malke
--
MS-MVP Windows Shell/User
Elephant Boy Computers
www.elephantboycomputers.com
"Don't Panic"

Unknown

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Jul 21, 2006, 11:00:27 AM7/21/06
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It could also be the processor chipset and not the CPU.
Open this pdf file from Intel and see page 11 of the document:
http://www.intel.com/design/chipsets/applnots/29226901.pdf

You also did not mention the brand of server you have, who made it?

JS

"Martin (Martin Lee)" <lajit...@21cn.com> wrote in message
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Loren Pechtel

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Jul 21, 2006, 12:20:51 PM7/21/06
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It means exactly what it says--a missing (or perhaps just loose) heat
sink.

Since you don't understand the message that's a clear indication that
you don't know enough to fix it yourself. Get a pro. Don't be
surprised if the board is toast--thermal shutdowns don't always react
fast enough to save the equipment.

JohnO

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Jul 21, 2006, 12:47:59 PM7/21/06
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>>Please help, what's the problem ?
>>
>>Thanks!
>>
>>Martin
>
> It means exactly what it says--a missing (or perhaps just loose) heat
> sink.


Just for grins, does this hardware detect the missing heatsink due to excess
heat, or is there some other sensor mechanism that detects its presence?

-John O


Loren Pechtel

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Jul 22, 2006, 1:03:01 PM7/22/06
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I've never encountered a board that would tell you that so I don't
know how it's sensing it. The intent is obvious even without the
knowledge of how it figured it out.

JohnO

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Jul 24, 2006, 8:28:58 AM7/24/06
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>>>>Please help, what's the problem ?
>>>>
>>>>Thanks!
>>>>
>>>>Martin
>>>
>>> It means exactly what it says--a missing (or perhaps just loose) heat
>>> sink.
>>
>>
>>Just for grins, does this hardware detect the missing heatsink due to
>>excess
>>heat, or is there some other sensor mechanism that detects its presence?
>
> I've never encountered a board that would tell you that so I don't
> know how it's sensing it. The intent is obvious even without the
> knowledge of how it figured it out.

Maybe it is.... If it's just the device passing a threshold temp, then
there's really no way the system knows why, unless the fan is not turning
(another sensor). Saying the heatsink is loose in this case is just a guess,
and probably correct most of the time.

But if there's some mechanism that detects continuity or something through
the heatsink mount, then that's a new thing that I would like to know more
about. The Intel doc JS mentioned doesn't give any clue.

-John O


petunia

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Sep 13, 2008, 6:21:32 PM9/13/08
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I know is a japanese page.. but look at the picture.. that is exactly
what is loose in your computer.. it worked for me@


http://online.livedoor.biz/archives/51110035.html


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yenory

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Jan 4, 2009, 4:56:14 AM1/4/09
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QUICK FIX.

The same thing happened to me. When I opened my computer, I noticed
that the "wire" that the "z" hook goes through had broken off but that
the actual device was still in place. Having read numerous postings on
this (apparently it is a common problem with Dell 4600C's), I determined
that the error message is triggered not just when the device comes off
but also if the clasp holding it in breaks. The electric current is
detected by the computer. When it breaks, the computer thinks the
device has come off. If the device is in place and only the clasp has
broken, it's simply a matter of restoring the flow of the current. So,
I found some wire that I used to make jewelry which I attached to the Z
hook (clasp) and attached the other end to the small metal arched piece
with two legs one of which could still be placed inside one of the holes
in the motherboard. I am sure many variations of this are possible.
You could put the wire inside the holes for example, if you have lost
the metal peice to hook into. Be creative! Just remember to turn off
your computer or you will be electocuted! This is just a temporary fix
but I am happy to have time now. The Dell site says after the
connection is broken it can't be restored. It will be interesting to
hear what the tech says. Good luck to all of you!


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shawn

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Jan 20, 2009, 10:44:06 AM1/20/09
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Nobody here has any idea what you are talking about. You're probably using a
website to view Newsgroups when most of us use a newsreader program such as
Outlook Express which comes with Windows.

Without replying to the original thread or quoting the original thread,
nobody understands.

"yenory" <yenory...@DoNotSpam.com> wrote in message
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VConnor

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Feb 24, 2009, 7:22:50 PM2/24/09
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Yenory, you are exactly right. I wish I had read your reply as it
explains exactly what was wrong with my computer.

Two days ago I got that error message and my Dell 4600C would not boot
up.

I looked on the web briefly and saw a few things to do. I vacuumed my
motherboard that was very dusty and noticed the heat sink was not
attached to the processor. The heat sink had two prongs sticking out
from it and there was only one connector to connect it to. It looked
like there was another connector, but it was no where to be found. I
went through the vacuum bag to see if I had vacuumed it up.

I was an electrical engineer for IBM years ago and I measured the two
prongs and found they were conducting. So I put a bare wire around the
prong that was no longer connected and forced it into where the
connector was.

The result was my computer now works!!! Way to go Yenory!!!


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Kathryn

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Jun 20, 2009, 5:09:15 PM6/20/09
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Yenory is exactly right. It is the heat sink on the chipset, not the
heat sink on the CPU.

Each end of the chipset heat sink retaining clip (Yenory refered to as
a "z" hook) is connected to a U shaped metal connector on the
motherboard. This connection creates an electrical circuit through which
current is passed. The diagnostics code that is built into the computer
monitors this current flow.

If the current is interrupted, the computer determines that the chipset
heat sink retaining clip is not connected correctly. Therefore, the
computer generates an error message.

The follow url takes you to the Dell website page that explains this,
complete with a photo:

http://support.dell.com/support/topics/global.aspx/support/dsn/en/document?c=us&dl=false&l=en&s=gen&docid=ED062573AA919F47E030030ABD624AC1&doclang=en&cs=

The website also says: -The chipset heat sink retaining clip cannot be
reconnected successfully after the current is interrupted-. Sounds like
this may not be true.

I had the same thing happen to me. The little U shaped metal connector
on the motherboard came completely out. Looks like the solder broke.
This is on a motherboard that I purchased from Dell 6 months ago, and
they tell me that the warranty is only good for 90 days. Kiss those
bucks goodbye!

I am going to try one of the solutions suggested here. What do I have
to lose now?

I hope this reply helps someone else that has the same error message.


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Unknown

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Jun 20, 2009, 8:57:20 PM6/20/09
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I just noticed your post and you find this may
be a good solution if the spring loaded retaining
clips/connector are still good. I removed the heatsink,
cleaned the surface with Arctic cleaner #1 & #2
http://www.arcticsilver.com/arcticlean.htm

Then carefully removed any old thermal pad or grease
using a soft link free coffee filter from the ship on the motherboard

Next I applied a small dab of non conductive Arctic Ceramique
to the top of the chip and remounted the heatsink.
http://www.arcticsilver.com/ceramique.htm

--
JS
http://www.pagestart.com

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Kathryn

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Jun 22, 2009, 12:04:54 PM6/22/09
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JS - Thank you for your reply. But in my post I said: The little U


shaped metal connector on the motherboard came completely out. Looks
like the solder broke.

The first thing I tried was cleaning and resetting the heatsink on the
cpu with new Artic Silver and that didn't work, so that's when I found
the answer in the Dell website: It is the heatsink on the chipset, not
on the cpu.

Yesterday I put the little U shaped metal connector back in the holes
in the motherboard and reattached the retaining clip, and Walla, it
booted right up. But in just a few minutes it went zinging out of there
because there is an incredible amout of tension in that retaining clip .
There is no way to hold it in other than to have it re-soldered. But I
was really happy to see that it would boot up.

SC Tom

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Jun 22, 2009, 12:44:02 PM6/22/09
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You could try this product
http://www.arcticsilver.com/arctic_silver_thermal_adhesive.htm#aserev
to glue the heatsink in place, and solder a jumper wire between the pads
where the 2 U-shaped connectors are. This will complete the circuit for the
heatsink sensor, and the adhesive will hold the heatsink in place.

SC Tom

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>

Paul

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Jun 22, 2009, 3:25:46 PM6/22/09
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SC Tom wrote:
> You could try this product
> http://www.arcticsilver.com/arctic_silver_thermal_adhesive.htm#aserev
> to glue the heatsink in place, and solder a jumper wire between the pads
> where the 2 U-shaped connectors are. This will complete the circuit for the
> heatsink sensor, and the adhesive will hold the heatsink in place.
>
> SC Tom

The instructions on that page, say the adhesive is permanent (like a two
component epoxy). So you would not be able to remove that later.

Someone tried once, when they glued a heatsink to a memory chip on a
video card, and instead of the glue breaking, the top ripped right
off the chip.

Paul

Kathryn

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Jun 22, 2009, 4:03:59 PM6/22/09
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SC Tom. Thanks for your reply. I have one question. Since one of the U
shaped connectors has pulled completely out of the holes in the
motherboard, is there something I can use to glue the prongs back in the
holes? (The prongs will go back in the holes but will not stay). Then I
could run a jumper wire from one U shape connector to the other.

The heatsink still seems to be firmly attached.

As strong as that retaining clip is, I'm not surprised that pulling out
the U shaped connectors seems to be a common problem with Dell
motherboards.

SC Tom

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Jun 22, 2009, 4:32:36 PM6/22/09
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You could try putting the connector back in the holes and putting a
preheated low-wattage soldering iron on it for a few seconds. That may seal
it in place enough to make the connection, but I wouldn't count on it to
hold under the pull of the spring. From the looks of the pads in the picture
you linked to, I'm not surprised it pulled out if it's simply soldered in.
Plain solder is not all that strong.

SC Tom

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Unknown

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Jun 22, 2009, 5:37:16 PM6/22/09
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RTV (Bathtub caulk).
Run a wide strip across both sides of the
white plastic (from your picture) to the motherboard.

--
JS
http://www.pagestart.com

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Unknown

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Jun 22, 2009, 5:43:44 PM6/22/09
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Also if you use Tom's suggestion:
http://www.arcticsilver.com/arctic_silver_thermal_adhesive.htm#aserev

The heatsink will be firmly attached and you can bend the retaining spring
back a little so there is lest spring force yet retains a good electrical
connection/contact. (after you apply the RTV I mentioned, must be applied so
it hold the white plastic to the motherboard but no to any part that makes
electrical contact)

--
JS
http://www.pagestart.com

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Paul

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Jun 22, 2009, 6:04:09 PM6/22/09
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Kathryn wrote:
> SC Tom. Thanks for your reply. I have one question. Since one of the U
> shaped connectors has pulled completely out of the holes in the
> motherboard, is there something I can use to glue the prongs back in the
> holes? (The prongs will go back in the holes but will not stay). Then I
> could run a jumper wire from one U shape connector to the other.
>
> The heatsink still seems to be firmly attached.
>
> As strong as that retaining clip is, I'm not surprised that pulling out
> the U shaped connectors seems to be a common problem with Dell
> motherboards.
>

The hooks, if they had enough lead length, could be bent on the
backside of the motherboard. Chances are, they are trimmed at
the factory, with very little excess length.

-----
/ / \ \
| | | |
| | | |
-----| |-----| |------
-----| |-----| |------
/ / \ \

One problem with the metal used for those hooks, is
solder doesn't adhere well to it. If you look at
thru-hole resistors, the metal on them has a tin-lead
coating on the outside. If you snipped the leg off
one end of one of these, and bent it into a hook
shape, it might make a better substitute, at
least in terms of the ability to solder it.

http://media.digikey.com/photos/Vishay%20BC%20Photos/5065FD100R0J12AFX.jpg

You have to examine the diameter of the holes
in the motherboard carefully, to select the right
"resistor leg" to fit the hole. Too thin a leg
(such as one snipped from a 1/8th watt resistor), and
it would be too weak. Too large a diameter, and it
would not fit the hole. I wish that wire came in
reels, because I have snipped the legs off many
resistors, just for the wire. The wire is
not especially stiff, but it does solder well.

Paul

Bill in Co.

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Jun 22, 2009, 6:52:52 PM6/22/09
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Possibly super glue?

SC Tom

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Jun 22, 2009, 7:01:11 PM6/22/09
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If you mean for the connector, it may not make a good enough electrical
connection since super glue is not a conductor.
If for the heatsink, that may work if both surfaces are very clean and flat.
Although I don't know what kind of heat the chip set generates and if the
glue would hold up.

SC Tom


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Bill in Co.

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Jun 22, 2009, 7:07:51 PM6/22/09
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True, it's not a conductor!
I was thinking solely of the mechanical aspects. If she needs an
electrical connection like for the connector, some soldering will be
required, like you said. I don't know if she could add a bit of solder in
there or not - just heating it up might not be enough if there isn't enough
solder already on the pads.

Kathryn

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Jun 22, 2009, 8:19:03 PM6/22/09
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SC Tom. The retainer clip on my Dell is even worse than the one pictured
in the link. It actually comes straight down to the U shaped connector
and has a hook in the end of it. You have to push the retainer clip
straight down (and it is VERY strong) then hook it to the U shaped
connector, which means that it pulls STRAIGHT UP on the connector. The
prongs on the connector that fit in the holes in the motherboard are
very tiny. Can't see how it held as long as it did.

It will make a connection if I just slip it back in the holes. It even
held for a few minutes when I hooked the retainer to it; long enough for
me to hook up the computer to see if it would boot, and it did boot.
Then it came flying out, just as I knew it would.

I may try to touch it with a soldering iron to see if I can melt the
solder enough to keep it in the holes, then run a jumper wire.

SC Tom

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Jun 22, 2009, 9:48:18 PM6/22/09
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Is the heatsink glued to chip OK? If so, just run the jumper and do away
with the retainer wire.

SC Tom

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RAnderson

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Nov 9, 2009, 11:37:32 AM11/9/09
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I believe I may have run into this problem myself with an HP 894c and
would really appreciate any help or insight you can provide. However, as
the dell site link previously referred to in this thread no longer
contains pics and HP has no information either, I would like to verify
that these rounded metal connectors connected to the motherboard (for
the 'z' clip) are the same as mine. Are they connected to the
motherboard via, what looks like, a black plastic jumper? If so, as one
of my clips is missing (no idea how!?!?!??) are replacement clips
available? If not, any idea on what settings I should use with an ohm
meter to check if there is an actual electrical circuit through which
current is being passed? If there is no current, I could just attach the
sink via adhesive and be done with this. Thank YOU!!!


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SC Tom

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Nov 14, 2009, 9:25:27 AM11/14/09
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"RAnderson" <RAnderso...@DoNotSpam.com> wrote in message
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Is this the problem? There's a picture there that shows the Z clip.
http://tinyurl.com/yd6klgv

Google it
http://www.google.com/search?hl=en&source=hp&q=heatsink+not+detected+dell&aq=f&oq=&aqi=
and you'll find lots of possible solutions.

SC Tom

SC Tom

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Nov 14, 2009, 9:37:55 AM11/14/09
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"RAnderson" <RAnderso...@DoNotSpam.com> wrote in message
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>

I thought your question sounded familiar. If you would read the previous
posts, you'll see that there is indeed a circuit that needs to be made
between the two pads. By using an adhesive to hold the heatsink on, you can
then solder a jumper wire between the two and the system should be happy.

SC Tom

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