firstly check your notebook battery .and check power cable .if ur note note turn on thwn problem in ur note book circuit .so open ur note book for repair and check fuse on pcb (printed board circuit ) if fuse is ok then check circuit of power supply.
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Laptops have a bad habbit of over heating and currupting the hdd ...thus not allowing post to appear and boot up. Also the battery also over heating and burning out not allowing it to recharge . basicly laptops need extra cooling if used for long periods , plenty of cool air flow around the base .
My best advise would be to take to your local dealer and ask if they can replace or test the major componants .
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