Question about Toshiba Satellite Pro L300 Notebook

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Toshiba Satellite L300 shuts down when ac power plugged in

Hi, I have a Toshiba Satellite L300 Laptop thats shuts down, restarts or freezes whenever the ac plug is connected. Works fine on battery power and charges ok with laptop closed up or turned off. I have cleaned out the fan and heat sink hoping it was just an overheating problem but it did not help. I would appreciate any help. Thanks.

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  • baiahmad Nov 09, 2012

    if a plug charger them reset my labtob toshiba l33

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How about this step, try to turn off the laptop itself. Remove the cables and battery just like what you did before, then press and hold the power button for 10 seconds. Then, reinsert the cables and battery on the laptop and then turn on the computer itself. If the laptop restarts, shuts down or freezes with the AC power cables, two things that you should seriously consider. It might be the power cable itself, AC cable port or the circuitry going to the motherboard. And since you have cleaned out the fan and heat sink, you have isolated that problem. Have you plug-in another power cable on your laptop? If yes, then check if it works. Otherwise, the main issue is that the AC port is loose or the circuitry of AC adapter going to the motherboard is not not working. You can re-open the unit and check the circuitry from the AC port going to the motherboard. You may check the circuitry from AC port to the power supply if it is ok. If symptom persist, please contact your local dealer...

Posted on Jul 04, 2010

  • shoogs Jan 11, 2011

    hi solacity! i have the same issue on that same model. i tried another charger and it didn't work.

    if it's dual core, try to go in "safe mode" and disable one of the processors then restart. this worked only for a while though.

    a friend told me that it's the motherboard already. i took it to a computer repair center and they said the same thing - motherboard problem.

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Its a problem with mother board can be fixed only by a professional...

Posted on Jan 19, 2012

  • mohammed shaikh
    mohammed shaikh Jul 22, 2014

    i have solved this problem its a long procedure willhave to work alot on the motherboard and can be fixed

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