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Dead HP ZBook 15 G2 - power circuit/supply broken?

HP Recommended
HP ZBook 15 G2
Microsoft Windows 7 (64-bit)

Hi HP Community,


I have a problem with my beloved HP ZBook 15 G2.


I cannot start it up at all (SSD harddrive and not regular mechanical drive) - nothing on the screen seems to start up.


I wonder if this could be the internal power circuit / power supply malfunctioning or broken, since nothing at all seems to be starting up. I mean, even with a broken graphics card, ram blocks or ssd, something would "seem to start up", right? I have tried those situations on earlier computers. 


Anyways, when plugging in the AC power supply in back of the computer, the LED next to the plug (the one that normally indicates "changing")  suddenly starts blinking fairly fast and continously. Again, that in my mind could indicate failure in the power circuit / power supply of Notebook,  right?


Anybody who can help me out? What "failure code" is this blinking with the charge indication led?


Any and all help is highly appreciated!



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