MacBook Pro (late 2012 15") does not turn on unless I reset NVRAM

Since upgrading to Mavericks, when I power-on my MacBook Pro (non-retina, late 2012, 15"), I get a chime and the power light (right of front bezel of unit) comes on for a moment, then nothing. Screen stays black never comes on. If I power on with resetting NVRAM (hold down Option-Command-P-R), I get the expected double-chime, and the MacBook will come on as normal. I have a Samsung 256gb SSD and 16gb of Crucial RAM.
Is this Mavericks related? I never once had this issue in Mountain Lion. Any suggestions on what I can do to prevent it in the future?
Many thanks.

http://support.apple.com/kb/HT3964

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The article you cited refers to The Mac Pro, a 50lb silver tower -- not a notebook computer.
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Hey
Thank you for the quick anwswer!
I am aware of what you described, here is the preferece file:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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Next on my list would be an installation from scracht - wich i would obviously love to avoid
The bewildering thing is that through a pram reset i can get the display to sleep once again...
Maybe a hardware prob?
Might want to check using the thunderbolt port instead, as soon as i can afford the adaptor.
Anyway i will go to offline world for some time now, on a crazy bicycle tour trough remote eastern europe.
I would love to hear from you on an occasion of a peek to cyberworld during my trip!
So long
Senior KLikklac

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