fan runs at high speed continusously
fan begins running at high speed when computer is turned on and continues running at high speed as long as the computer is on.
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Try to Reset SMC by pressing Shift+ control+option and the power button hold down it for 5-7 seconds. then try to Reset PRAM by pressing option + command+ P+R hold down these 4 buttons then press the power button and keep holding those 4 buttons for atleast 3 times restart.
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