Overheating on boot

Intel D101ggc motherboard
June 26, 2010 at 02:15:09
Specs: Windows xp
I recently replaced the cpu heatsink, and now the bios seems to be massively overestimating the temperature of the CPU, and shutting down after 10-15 seconds. Going straight into the bios config on startup, it reads the CPU as running at 90 degrees C, after only 5-10 seconds of operation in a 23 degree C room. This reading rapidly climbs to 110 degrees C, at which point it shuts down. Nothing like that amount of heat can be felt coming off the chip, though, so I can't really understand where this reading is coming from.

I followed the Arctic Silver guide to thermal paste application, cleaned off all the old gunk with isopropyl alcohol, cleaned out most of the dust from both the case and the motherboard itself - this system should be running cooler now than it has in years.

I should note that, faulty heat reading aside, everything else seems to work fine - fans spin up, bios happily beeps that POST is fine, even windows will load, if I get sufficient time before a temperature shutdown.

I've tried replacing the battery, playing with the bios configuration jumper, booting from the bios on a USB drive - nothing gives me more that 10-15 seconds of runtime, which makes it very hard to alter any settings. If anyone has any suggestions, I'd be embarrassingly grateful.


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June 26, 2010 at 07:10:56
If the system had been working fine, you replaced the HSF, then system began overheating, why are you messing with the BIOS & CMOS battery? The only thing that could possibly have gone wrong is that you installed the heatsink incorrectly. That fact that the system is shutting down should tell you that it IS overheating, not just a false temp reading. Either you used the wrong amount of paste or you didn't properly lock down the heatsink.

There are only 3 methods that should be used when applying paste...the dot, the line, or the spread. Which one you use depends on the make/model of the CPU. Since you didn't state which CPU you have, I can't point you to the exact instructions, but here's the list for Intel CPUs:


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June 27, 2010 at 01:21:48
Jam - I appreciate the feedback, but if you'll read my post a little more carefully, you'll see why I suspect that the HSF is not the issue.

I certainly did suspect the heatsink initially, and have reseated it several times, using several different configurations of thermal grease - but it appears to be installed correctly and working properly. I suspect the temperature reading is faulty because, as I have already mentioned, it seems to believe the chip is running at 110 degrees C, when nothing like that amount of heat is coming off the chip housing. In addition, no evidence of that level of heat ever being present is apparent - no burning smell, no disfiguration or discolouration of any plastic components, etc. I therefore suspect that the faulty temperature reading is triggering a BIOS shutdown, and not the actual presence of that amount of heat.

Having read some other case histories on this site, I noticed that someone having a similar problem of a faulty temperature reading fixed it with an upgrade of the BIOS. Having only 10-15 seconds to work with, however, makes this difficult. Does anyone have an idea for over-riding the temperature shutdown in that time period?

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June 27, 2010 at 08:34:32
Exactly what cpu is it ? I have an E8400, which is known to have issues in certain cases with faulty temperature readings in the BIOS. Have you checked other temperatures, such as PWM. You should be able to disable the cpu temperature shutdown in the BIOS if you are sure that it is not overheating. However, I would wonder why it didn't do this before you replaced the HS/F ?

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June 27, 2010 at 08:50:45
Do not attempt to flash the BIOS if the machine is in danger of shutting down...you could end up with a dead motherboard.

Is this your motherboard?


What processor was installed before and which one now?

Audares Juvo

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July 1, 2010 at 15:20:09
Sorry for the delay - I'm afraid I've been rather busy recently.

SkipCox - The D101GGC is my motherboard. The processor is the same one as before the HSF switch - I'm not sure which one it is, though. Here's the code on the metal casing -

2.66 GHZ/2M/533/0SA

If anyone can translate that, or point me to somewhere that can, I'd appreciate it.

kx5m2g - How can I disable the cpu temperature shutdown in the bios? All I've been able to find is the temperature display, which doesn't allow me to disable the shutdown. I may be being ridiculously dense, but can you help me?

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July 1, 2010 at 15:48:49
You have to explore the different menus–it would be something like PC Health or Hardware Monitor if you're able to do it all. It should probably be under the same menu as where you found the temperature display. But before you disable the cpu temperature shutdown in the bios, you should make sure that the cpu is NOT actually overheating. Were you able to check any other temperatures ?

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July 1, 2010 at 16:01:40
Here's your processor...it's a dual core pentium D.


Here's how you apply the heatsink compound; follow these instructions regardless of the brand of heatsink compound you use.


Make sure this is done correctly and forget about a BIOS flash.

Audares Juvo

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