A:Answer It appears that there has been a "function" change.
The SLEEP MODE is not Hibernate.
The SLEEP MODE is actually 'STAND BY' as the status light flashes on and off. Then by pressing any Key, the unit turns back on to resume.
Hibernate should shut the unit off, though with any open programs remaining as they were. Then by pressing any key, the unit powers up. (Do not have to use the main power button)
The STAND BY mode (use to) 'hibernate' the system but in LOW Power state. Then by pressing any key the system would come out of Low power STD BY
and resume.
The earlier Hibernate mode did not remain in a Low power (On) mode, but shut the system off and then would resume with pressing any button as opposed to pressing the power button.
Now by using the Sleep mode, this essentially has resolved part of the issue, where by pressing any key will ' resume' the unit. But (this Sleep mode) does not turn the unit off but places it in a low power state rather than turning the unit off, as the old 'hibernate' option use to do
Thank you HP crew for your helpful tip