Vincent_34 :
Thanks for your help. The white indicator light is on. I tested the wire And it's carrying power. I don't own a voltmeter.
Is there any response at all to the pushing of the power button? E.g fan or HDD start up before power off again.
Could possibly be a faulty button
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The button comes on white and I hear something, either the fan, hd or the DVD (empty). Then it's stops. When I hold it down for 8-10 seconds the power button will blink white 3 or 4 times.
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The blinking of the power button LED is almost certainly an error code for some sort of power issues. Usually requires a bit of effort sifting through manuals to find your specific issue, but very likely that its the charger.
If possible, find a new charger to test with, or a friend that you can borrow one off.
Alternatively, find someone with a multimeter and ask them to test the charger against the expected output voltage/current that will be noted on the charger