Question about Toshiba Satellite A45-S250 Notebook

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Cooling system fails

When my laptop boots up, a pop up window is displayed stating that the cooling system fails and to shut down immediately. How do I go about fixing this problem?

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There are two fans in this unit. It was my secondary fan that had failed. The primary fan is the one on the bottom that you can see, and the secondary is in the back near the usb connectors.

You'll need to determine which one has failed. I was able to diagnosis mine by setting the power management features to Level 2 from 4 on the cpu, and the fan setting to "battery optimized."

In that particular configuration, I could hear a fan turning on, but it wouldn't run long enough to trip the error message. I was then able to use the machine in a very slow speed waiting for the replacement fan to arrive. The fan was about $35, but because of it being buried so far into the internals, it took me three hours to disassemble, replace, and reassemble the machine.

I used the pictures here: http://www.irisvista.com/tech/laptops/ToshibaA45/Satellite-A45-remove-hinges-1.htm as a guide for assembly and disassembly.

Posted on Jan 07, 2010

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Most likely the internal cooling fan has stopped spinning.

I would try using a vacuum cleaner and apply suction to the cooling vent on the laptop. This will help to remove trapped dust and potentially free up a stuck fan.

Sometimes a little puff of air from a can of compressed air in the fan outlet can get the fan spinning again, although use the vacuum first so that any bits of dust are not pushed into the fan.

It is quite possible that the fan needs to replaced, which is a typically a $60 part that would require laptop disassembly to replace.

Posted on Oct 07, 2009

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I think your cpu fan is already facing problem its better to replace it other wise it will keep working like that sometimes good and more than bad.

Posted on Oct 07, 2009

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Hi..

If the laptop shutdown maybe it cause overheating.
Laptop shuts down? Computers may not be smarter than people, but if they’re designed properly, they will shut themselves down before overheating to the extent that they do themselves damage. If the smart person keeps turning the notebook back on and figures out a way to foil the protection, the laptop is probably doomed. Once a laptop shuts down for thermal event protection, it may refuse to power back up for a fixed period of time, five or ten minutes, or it may begin to boot and shut down immediately as soon as it boots to the point that it can figure out that its too hot. The over-temperature protection is generally a BIOS rather than an operating system function, so one sign of an overheated laptop is one that shuts itself down while you’re using it and then refuses to boot as far as the operating system unless you leave it alone for an hour or so to cool down. Unless you’ve been working in a very unfriendly environment, high temperatures, direct sunlight, etc, you should take even a single overheating shutdown as a warning to back up your data at the first opportunity and to give the cooling system a serious cleaning.

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