What happens when you remove the battery? Assuming you have done the standard batt. removal reinstall and you are having the same issue, I'd get it looked at.
I have an alienware laptop that is giving me a new problem, the system will not remain shut down unless I remove the power supply completely, and the monitor will not display anything. as I can not seem to even get to a command prompt I can only ask for help. someone please tell me what I can do here.

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