My Toshiba Satellite A45-S250 had abnormal noise from the fan for some time. Then the noise stopped by itself and since then the fan is not working and the computer turns off itself after a few minutes of operation. Before turning off, a message saying that the computer is not cooling pops up. Can I change the the fan at home? I have never done any computer repair before, but I am good with fixing simple electrical instruments.
THe shutting down is your laptop's thermal protection. It is trying to keep the CPU from being destroyed. You should stop using it until you fix it, or you will destroy it.
The fans are not hard to replace and toshiba disassembly is fairly straight forward. Just get your #1 and #2 phillips head screw drivers and pay attention to how you take it apart.
Call Toshiba and order replacement fans for your laptop as they will not set you back very much.
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