Hibernation mode loses everything on the laptop

[Anneka123]

I have never had an issue with my laptop.

but in the last week, everytime the laptop goes into hibernation due to inactivity it loses everything. Normally when the laptop goes into hibernation and i touch to wake it up everything is still the way i left it.
Recently it went into hibernation and when i touched the keyboard it started up as if it had just been turned on and i lost all my work that was on the screen. 
i changed all the hibernation settings in the control panel checked for all updates everything is fine. And i dont understand why it is doing this. Please some help would be great!

[Lil_Boy_Blue]

Hi
PLEASE POST ANY RESULTS.
First:- Turn off the computer, press and hold the PWR button for 4 seconds.

Then - Leave only keyboard and mouse connected, disconnect all externally connected
devices such as Docking Station, USB storage devices, displays, and printers.
Unplug the AC adapter from the computer.

Next - Press and Hold the Power button for 15 seconds to Hard Reset.
Rinse and Repeat; Re-Connect the AC adapter.

NOW begin checking/testing/proving the Hardware is fit for purpose.
Power on your PC, press ESC (repeatedly), then F2 at the prompt.
Choose System Tests (Fast Test does a 4 minute hardware check).
AND/OR
HOW DO I USE DIAGNOSTICS?

HP PC Hardware Diagnostics Windows is a Windows-based utility that allows you to run diagnostic tests to determine if the computer hardware is functioning properly. The tool runs within the Windows operating system in order to diagnose hardware failures. HP PC Hardware Diagnostics Windows comes pre-installed on new HP computers, but if not on yours, download here:-
https://www8.hp.com/us/en/campaigns/hpsupportassistant/pc-diags.html

Also ensure Fast Start-Up is disabled if you can.

[Anneka123]

Hi 

Thank you for your response. 

However it did not make any difference to the current problem.