Core 2 Duo Over Heating.

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shahbaz200

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Apr 20, 2012
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I have applied thermal paste several times but it keeps overheating. So here's how I applied this time:

Opened Toshiba Portege A600 till I can see CPU and cleaned old paste:
b9a5eee350.jpg


This seems problem to me. On heat sink there's a foam/rubber like thing that is teared apart because of again and again applying. Why Toshiba used this thing? Looks like poor conductor to me.
c8eaf92194.jpg



Applied new paste:
c461d2fd2e.jpg


And closed it:
6df8360029.jpg


Temp at first boot:
295fb164ed.jpg


Started Counter Strike source, played for LESS than 2 mins and game started lagging as usually and reached this temp:

cc81258041.jpg


What is THRM?


This laptop was able to run these stuff without any lagging when new. But now it isn't performing like that because of heat that makes it underclock. What if I peel that grey rubber?
 
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Karsten75

Karsten75

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Oct 15, 2009
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Rubber/foam makes no sense. I would look into whether that is the old thermal pad that you can perhaps remove.

I also think you appied way too much thermal paste. I know many sites say "Pea-sized" but "grain of rice" is more like that is needed.

This is the crucial (important) objectives you need to achieve.

There has to be a very tight connection between the heatsink and the CPU. This bond must be as complete as possible. THe Thermal paste is only there to fill out small (nearly invisible) irregularities in the two surfaces. As far as possible the contact should be between the heatsink material and the CPU lid/case. The connection must be very, very tight so good contact ensure good heat transfer.
 
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Danifilth

Danifilth

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Apr 22, 2013
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If what you mean by peel the gray rubber on that cooler yes remove the old thermal paste with rubbing alcohol real good. And apply a smaller amount of paste on the processor since it has no lid and make sure it makes good contact when you tighten it up.

Either you didn't remove the old paste or its not making good contact or the fan is not keeping up with the cooling it might be going bad. Only way to tell is if you spin it and see if it stops fast and if it does then it needs lubrication or replacement.

 
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shahbaz200

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No that gray stuff isn't old thermal paste. Some of its area is uncovered that I have shown in red box and rest area is covered with transparent plastic sheet. So I don't think thats old paste, removing would be safe?
baef0be44c.jpg
 
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Danifilth

Danifilth

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Ah that i think its to protect those little chips you see on the processor to prevent it from being crushed/chipped off from pressure. I removed the square padding it had on my northbridge chipset and its fine on my computer but didn't have anything else around the chipset. I would leave it on to be on the safe side lol
 
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