Power cord not recognized by laptop

Does anybody know if the power cord, when you insert it is directly connected to the motherboard?

Try removing the battery.
Any time I connect something like a projector or touch a USB cable on the case I get the power pack tripping out and some sparking.
Take battery out and restart seems to fix it.

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    Try removing the battery.
    Any time I connect something like a projector or touch a USB cable on the case I get the power pack tripping out and some sparking.
    Take battery out and restart seems to fix it.

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