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Fan not working

Ok ive posted this 3 times and no one seems to have any idea, ive got a laptop that shuts down straight after it boots ive sussed out that it is the cpu overheating because the fan does not turn on i have removed the fan rewired it to another computer and it works fine so i need to know what can cause the fan not to work?

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  • marley mcelhinney May 28, 2009

    cheers these were the answers i was looking for, i'll try them out and let use know

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  • Contributor
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If the fan itself is functioning as you say then it has to be the circuit on the motherboard try and install speedfan http://www.almico.com/sfdownload.php it's an excellant tool and you can use it to control the fan speed,download on another computer and put it on a flash drive, have some one use a can of dust off and spray lightly to spin the fan or an airhose from a compressor would be better and should keep the computer on long enough to install it. You can also try and update the bios it is possible for it to become corrupt and thus causing the fan not to come on. If either do not work motherboard replacement is most likely necessary.

Posted on May 28, 2009

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Wire the cooling fan to one of the power connections coming off the power supply where the fan will stay on the whole time the computer is on,If it still shuts down,the processor is bad.

Posted on May 28, 2009

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What can cause the fan not to work, is the voltage not getting to it from the motherboard meaning there are bad components on the motherboard that isn't allowing it to get there such as bad IC's and because of this the laptop will get very warm or hot to the touch and you can mainly feel it from the keyboard and moreso from the mousepad and its buttons.

I've seen this problem before and replacing the motherboard is the best option in this case unless you want to take it to a electronics shop and they may be able to troubleshoot the problem component level and see where the problem is but they will probably tell you to replace it as well since they are complicated to troubleshoot.




Posted on May 28, 2009

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