So there is a generic reset for most PCs where we remove the power and if laptop the battery. That done you press the power button for 60 seconds. Release, slip in battery (laptop), apply power and power up.
If it does not power up it's not a hibernation issue but a machine in need of repair.
Closed computer and went to bed. Next morning it was in hibernation mode and won't reset, come out of hibernation.

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