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Mitac 8640 Laptop Processor Cooling Fan

I have a Mitac 8640 Laptop. The fan has been making a lot of noise for a few months. Now it runs for about 10 minutes then suddenly shuts down. I reckon the fan is shot and the processor is overheating. I'm not even sure how to get to the fan though.

How do I:
Remove the old fan.
Order a replacement.
Fit the replacement.

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  • Anonymous May 19, 2009

    Computer shut down, but it is not processor cooling fan, it is other small fan (maglev ???) located under keyboard.

  • DEKR
    DEKR May 11, 2010

    Does your computer shut down or the fan just stops.

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Hi the prob is not with the fan all you need to do is take the cover where the fan is and clean it with a paint brush so all the dust is gone.

Posted on Jan 16, 2009

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Posted on Jan 02, 2017

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Hi. I have a HP laptop for about 3 months and now it gives me the message " a cooling factor is not working properly" , and it shuts down 15 minutes later. what should I do? Should I go to the...


The laptop should be covered since it is only three months old. That's the good news. The less than good news, is that you may have to wait a while before you get your computer back.

I don't have the laptop in front of me, so naturally I can't diagnose the problem directly.
I would hazard an intelligent guess that the Cooling Fan inside the laptop has failed.

Components inside a computer are normally cooled by air. (High tech gamer computers may use a different type of cooling system. They may use water, or a refrigerant of some sort. { Dry Ice, Nitrogen, Freon, etc)

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The Processor is the 'Brain' of the computer. It's designed to operate up to a maximum temperature, (Thermal Limit), and no higher, or damage to the Processor will result.

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My laptop fan had been making noise for a few months and now just stoped working!!


Hello:
Generally, all laptops cooling fan start for a second just after power on and you may notice noises. These noises, comming from the fan, are because it is dirty. So, it may be jammed by dust excess. If this is the case, you need to take apart it and inspect the fan while booting the machine. Removing the keyboard would let you see the fan and clean it. Try to move the vane with your finger to make sure if it is not obstructed. Maybe, you need to take the fan out and oil its axle. Besides you can check if its power cord is attached correctly. It is not recommended to operate the laptop with this malfunctioning fan.

I hope this helps you. Thanks

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I need a new cooling fan, how much are they?


The old addage "you get what you pay for".....It applies here. You can get 80mm to 120mm fans for under 20 bucks, but depending on how fast they have to spool up to keep the processor cool and how well their blades have been designed determines how loud they are, especially if they have been cheaply made....poor bearings and poor blade design equals noise. Bigger fans are actually a lot quieter because to move air they do not have to turn as many rpms. Get the biggest best made fan you can that will sit confortably in the case without interference. Also, download the little program called Speedfan, it will monitor fan speeds and system temps and make adjustments to the fans to keep them in the quiet range when possible.

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Hi, my compaq CQ50-115NR used to make great fan noise...now, nothing and it gets hotter and hotter...what should I do?


Have the fan replaced.

The 'great fan noise' you heard was the fan's bearings.
The looser the fan bearings became, the more the fan tilted, allowing the center hub of the fan to rub against the bearing base.

A laptop has a poor cooling system. All of the hardware components, are crammed into one tiny box. Air is the only cooling medium to keep these components cool.

The Processor, and the graphics chip are the two components that give off the most heat.
When a Processor becomes too hot, it turns off.
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This is a Fail Safe feature built-in, to keep the processor from burning up.

I would advise not using the laptop until this has been corrected.
Is the laptop still under warranty?

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Your system will run fine until the processor starts overheating... why not just replace the fan?

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The first thing you want to do is make sure the fan is clean.  Chances are dust buildup is causing the excess noise.

If that's not the case and you're looking to replace the fan, then you first need to find out the size of the fan. General sizes(diameter X width in mm) are listed on this page:

http://www.svc.com/case-fans.html

Generally, you're looking for something that will match the size of what you're replacing & push enough air at a reasonable noise level to cool the heatsink/CPU.  You want to stay in the area of 30dBA max for noise.  You also want to see if it has a 3-pin or 4-pin connection.

For example, if you have an 80mm fan, I would suggest something like this:

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It's pretty quiet with good airflow.  Also, it has a 3-pin connection, but includes an adapter for a 4-pin connection.

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