Power indicator is still lighting even if Satellite L645 is off

Sorry but my question:
http://forums.computers.toshiba-europe.com/forums/thread.jspa?threadID=65758&tstart=0
was not answered.
This problem appears periodically. And after turn off it is two ways to solve it.
1) forced turn off buy pushing turn off button for 1min.
2) removing battery and AC adapter.
But when I turn off my notebook next time this problem appears again periodically.
What can be the cause of my problem?

Ive never been faced with such problem and, unfortunately, I cannot give you proper answer. Looking around on this forum I also didnt find some similar issue so my advice for you is to contact Toshiba service and ask for help. There must be some problem with power supply electronic.
I cannot imagine something else can be responsible for this.
Is notebooks warranty still valid?

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