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  • As you describe it, one hardware piece (probably the graphic card) is not allowing your PC to wake up. It doesn't shut down, it just can't wake up. Does it have the more up-to-date drivers?
    – fernando.reyes
    Commented Feb 28, 2017 at 14:09
  • I'm pretty sure the issue is not that the PC cannot wake up but that it shuts down. The power button is blinking in sleep mode. When this issue occurs, it does not blink at all.
    – Duken.Jr
    Commented Feb 28, 2017 at 14:12
  • Your computer is definitely ON and not showing an image on the screen, it's a graphic card problem.
    – fernando.reyes
    Commented Feb 28, 2017 at 15:49
  • Not so sure, if BIOS failes to initialize a component (CPU/RAM) it let's you know there's a problem by beeping. In my case, no such thing happens. Also, how could the GPU fail to initialize once and then few seconds later work perfectly and continue to do so without any hiccup for days/weeks before the issue occurs again?
    – Duken.Jr
    Commented Feb 28, 2017 at 16:06