Having problems with your Toshiba Satellite A45-S250 Notebook ?

Cooling system fails

\015 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?\015

Answers :

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.
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\015\012You'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."
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\015\012In 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.
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\015\012I used the pictures here: http://www.irisvista.com/tech/laptops/ToshibaA45/Satellite-A45-remove-hinges-1.htm as a guide for assembly and disassembly.
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.
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