This is only the first of many things you may need to do to determine the fault. But it is a process for determining the exact cause.
Make sure the ac adapter is correctly plugged into the notebook and into the power cord.
If
everything is plugged in correctly and it still will not power on,
follow these steps to complete a 'power reset' of the notebook.
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I took all of the screw out, but the top part won't come apart.
George
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