i face a problem with hp630 laptop motherboard that as the display comes fan rotates very fast and the board shutdown please help

need repair

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shutdown is thermal protect cpu or gpu. Replace thermal grease

i had already changed the thermal grease and heat sink. i had noticed that cpu does not get too hot as the motherboard shut off. i had already replace the cpu. i had programmed the bios dump from a working board. but nothing works.

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