windows 10 hibernate on its own (usually when inactive)

anybody faced such a behavior ? i usually leave the laptop running over night to encode videos for my car player or gear vr , after the upgrade to the anniversary edition i noticed that windows 10 adopted an odd behavior of hibernating the system if it finds the user inactive for a while (even if a task is running) . i googled but nobody seem to have posted such an incident else where , i specifically faced that a while back on windows 8.1 on a different laptop , i asked about it in previous forum but had no serious help that i kind of ended up buying a new laptop because not even re-installing windows helped , now my questions :
1 - is this a setting that can be switched off ?
2 - no its not running in task scheduler (it is related to user inactivity) so is there a known tool to fool window into believing the user is active ?
3 - is it logged in events as of which user / program issues the hibernate command ? if so what to look for ?

TechnoMage said:

Hibernate has long been a source of hate and discontent for many Windows users.
I don't like it and permanently disable it on every Windows install, (or initial service call on any PC.)

Remind me never to call you out to look at my PC then! :)

I actually like Hibernate and prefer to hibernate my laptop on closing the lid rather than sleep. For one thing, Sleep can't last forever, there's a very small drain on the battery to sustain it.

Like the OP, I leave large video processing sessions running overnight. While the Settings for 'Sleep after...' are easy enough to find, the one for Hibernate isn't. @nIGHTmAYOR, look in the advanced settings for your Power Plan.

Bree said:

Remind me never to call you out to look at my PC then! :)

I actually like Hibernate and prefer to hibernate my laptop on closing the lid rather than sleep. For one thing, Sleep can't last forever, there's a very small drain on the battery to sustain it.

Like the OP, I leave large video processing sessions running overnight. While the Settings for 'Sleep after...' are easy enough to find, the one for Hibernate isn't. @nIGHTmAYOR, look in the advanced settings for your Power Plan.

Wow , it was set to 180 minutes plugged in , i never came across that setting before but surprisingly i never had that issue with this laptop , so i just set it on to never for plugged in , testing to see if it solves the issue. thanks in advance @Bee.
@TechnoMage, your solution isn't so bad if all else fails. P.S (I just hope this doesn't revert it to just shutting down this time , at least it reserved encoding sessions after resuming from hibernate :)