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I have a 3 yar old laptop that runs loud......i have sprayed compressed air in it, and still noise. it shuts down at times. i won't try to remove the fan. i have a heat cloth under it, but its still loud. suggestions? and what would a new fan cost to buy and have installed?

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Perhaps you should reconsider removing the fan. You may find your particular Model/Brand of laptop's fan, not that hard to access.

The pathway that leads air to the Cooling Fan, may be of a design where it has a filter. A piece of foam-like material, essentially. The pathway I'm describing is the Cooling Duct.

Using a can of compressed air for computers was/is an excellent idea.
However if I may,

1) It needs to be sprayed only in the Intake Cooling Duct, not the Exhaust Duct.
Where air is drawn in is the Intake Cooling Duct.

2) The filter I lightly described is at the end of the Intake Cooling Duct.
Dust, dirt, hair, (Animal and people), carpet deodorizer, you name it, can build up over time, and compressed air alone cannot remove it.

The area needs to be accessed, and the foreign debris physically removed.
Q-tips, a small brush, and compressed air are used.

To show some examples:

1) Moderately easy:
(You can click on the photos to enlarge)

The Cooling Fan assembly is near the top.

Moderately difficult:

The laptop is disassembled down to the middle section, to access the Cooling Fan.

More difficult:

The laptop has to be completely disassembled, (Motherboard removed), in order to access the fan.

If you wish I could do my level best to guide you step by step, and if available be able to post diagrams, photos, and a Service Manual.

Just post in a Comment.
(Want to know more about my expertise? Left-click on my avatar)

Posted on Oct 01, 2010


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Random shut down

The three most likely causes are:
1. Overheating caused by dust buildup inside the laptop. Get a can of compressed air at a computer store or office supply store. Do NOT shake the can. Turn off the laptop power. look at the rear of the laptop and the bottom panel and locate the air vents or grille. Attach the little skinny plastic straw to the button on top of the compressed air can. Point the straw right at the air intake grilles(s) and spray a 2 or 3 second burst of air. Move the straw further along the grille and spray again. There's usually an air exhaust vent on one side of the laptop and, hopefully, a bunch of dust will come flying out of that exhaust grille.

2. One or both of your RAM memory sticks is faulty. Check the laptop user guide or maintenance guide and read how to access those memory modules. Basically, you remove some cover screws on the bottom panel of the laptop (after removing the battery and power cord!) remove one stick of RAM. Replace the cover and run the laptop a while to test that module. If it works OK, shut down, remove cover and move that module to the empty slot beside it. Test again. If OK, repeat the test but this time use the other RAM module. This procedure will isolate which, if any, RAM module is faulty .... or which memory slot in the laptop is faulty.

3. Either your power cord/charger unit is faulty or the power input jack on the laptop is damaged and making a poor connection. Wiggle the cord a little when the laptop is running to see if that causes the laptop to shut down.

Other possibilities include a bd or failing hard drive or malware/virus infection. Take it to a computer repair place.

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Hmm if u can open up ur computer then u can clean the fan ur self.Else if u have a Compressed Air Can,u can try spraying Compressed air to ur Fan.However even if u do so,the dust will be inside the laptop.So best is to take the Laptop to a service Center if u r not an expert in removing the back of the laptop

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When the CPU overheats then it will shut down (i.e. thermaloverload) and won't boot up again until it has cooled down. If this is theproblem is not fixed then the CPU will eventually fail.
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Probably overheating. Are you playing games when it shuts off?
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