Overheating and fan sound issue

December 9, 2009 at 04:07:43
Specs: XP, 512
My pc overheating , and when i boot up , it
written previous shut down is due to cpu over
heating something like that. Other than that,
my fan sound are very big and noisy... I not
sure whether the sound come form power
supply, cpu fan, or graphic card fan.

Question 1 :
I keep overheating , what should I do?

Question 2:
The noisy sound come from where?

My hardware information:

Power Supply:
Cooler Master 480W

Intel DP965LT

Pentium D 945 3.4

Graphic Card:
Leadtek Winfast 7600 Gt

See More: Overheating and fan sound issue

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December 9, 2009 at 04:36:04
Only you can tell where the noise is coming from & that's by removing the side panel from the pc and listening. If you're not happy poking around inside the box then take it to a tech. If you're happy then gently touch the centre of each fan, just enough to slow it slightly & see if the sound alters - then that's your culprit. The PSU fan you cannot get to, so you'll just have to eliminate the others first. If you've never opened up your pc you may well find it's filled up with dust - a can of compressed air blown through it will help and hopefully cure the overheating - don't try using a vacuum cleaner inside the box..

"I've always been mad, I know I've been mad, like the most of us..."

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December 9, 2009 at 05:17:36
The heatsink MUST be installed properly. You MUST use thermal paste between the CPU & heatsink and it MUST be the proper amount. For a dual core Intel CPU, the paste should be placed in a thin straight line & it MUST be oriented in the right direction. If you place the line 90 degrees off, the CPU will overheat. If you use too much paste, the CPU will overheat. If you use no paste at all, the CPU will overheat. You have to get it right! Also, you must NOT reuse old paste.

Here's the instructions for a dual core Intel CPU:


If you don't have paste, you can get a tube of "Heat Sink Grease" from Radio Shack for $3:


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December 9, 2009 at 08:27:15
Heat sink is stick with cpu cooling fan, or on top of the
motherboard? Please refer picture at :


The thing below processor, and left hand side of Ram, that 1
is heat sink or not?

Next, I know all about opening pc. But the sound really cant
hear it from where. Really cant identify from either GPU, PSU,
or either cpu cooling fan? By the way, how to use the
compress can to clear the dust?

Lastly, "gently touch the centre of each fan, just enough to
slow it slightly & see if the sound alters" , what meaning?

means using something to block the fan move and hear got
noise or not?

Sorry as i am newbie.
I appologize if any inconvenience.

Thanks for replying.

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Related Solutions

December 9, 2009 at 12:09:59
Your link doesn't work. Assuming you have a stock Intel heatsink (with fan), it probably looks like this one:


The bottom of it should look like this:


And when you apply the thermal paste to the CPU, it should look like this:


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December 9, 2009 at 22:10:46
Sorry and this is the new link


As the picture shown, the part label Intel P965 Northbridge
chipset got related with heat sink? I have a paper given written
cannot touch that part, that paper is given when buying the

I have touched it before, and will it cause my pc got problem?

Thanks for reply

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December 9, 2009 at 23:56:19
Okay first off if your getting messages about the cpu overheating I have found that at least 90% of the time the problem is related to the heatsink and fan that are attached to the cpu. Either the fan is going bad, has gone bad or the fan and or heatsink are clogged with dust.

Did you build this PC?
Was it working fine prior to this problem?
If you built it did you use thermal paste between the cpu and heatsink/fan assembly?
Did it work for say six months and start overheating?

If it has been working fine for a length of time and you have not removed the heatsink from the cpu don't worry about the thermal paste.

I think part of the confusion here is you have more than one heatsink. There are two shown in the picture you posted they are the North Bridge and the South Bridge. If you see dust in them blow them off with compressed air (canned air) but those are not your problem.

In the picture it shows "Socket 775 Connector" that is where your cpu is ond on top of the cpu is the heatsink and fan assmbly we are speaking of. You need to clean out that assembly. If it is clean then more than likely there is a problem with that fan. Or the bios controls have been altered and the warning temps have been set to low.


I want to go like my grandfather did. Peacefully in his sleep. Not screaming at the top of my lungs like the passengers in his car.


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December 10, 2009 at 01:22:41
Ok, first, I built this PC at December 2006,
And i didn't put thermal paste.

I using this PC until now about 3 years.
Overheating problem occur about 2-3 months ago.

So now means that my north bridge all is normal.
Just problem at the CPU fan there right?

Take it more simple,
I change the new CPU fan and all thing will be solved?

Lastly, i cannot control temperature setting on the BIOS.
Not same with my other computer. I think is because i using
Intel motherboard.

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