Hi , I am having a toshibaM645-S4050 laptop with windows 7 operating system installed in it. I am having a problem with the laptop. Yesterday while I was working in the laptop I found that the laptop fan was spinning very fast. Though it was not plugged to the Ac power source the fan kept on rotating. Then suddenly I got an error message regarding the cooling system error. I realized that the fan has stopped and BIOS was prompting me to shutdown the system. Can anyone tell me what the matter is.
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