Windows 10 laptop goes to sleep despite every possible setting

We have two laptops running Windows 10 Pro version 1703. Both show the following problem:

When the laptop lid is closed, the laptop goes to sleep or hibernation after a random time. I have tried every possible setting I can think of to prevent it, but it still happens.

With one of the laptops (an Asus N53SV) this has happened for a long time already. Because it seemed to be a hardware related problem (closing the lid) I even went as far as replacing the motherboard, which did not help.

With the other laptop (an Asus N75SF) this recently started happening.

Both are members of my local Windows Domain (Windows Server 2016), so group policy could also play a role. However, I could not find anything that could be related to this problem.

Does anyone have any suggestions?

TIA,

Bart

Thanks.

powercfg /SYSTEMSLEEPDIAGNOSTICS /duration 10 gives me one sleep event, but I can't deduct why it went to sleep.

I found many event 42 in the event log. There were only 2 Sleep Reasons: "Application API" and "Button or Lid". I would not expect "Button or Lid", because I disabled that whereever I could. I could not find any occurrence of Sleep Reason: Battery.

"Application API" is a possible cause, but I see no possibility to find out what application or API is the culprit. In Event Viewer is a link Event Log Online Help, but that gives a blank page.

The sleep occurs when the laptop is on AC power. I don't know if it happens when on battery too.

I have installed the Insomnia tool, and I will wait and see what happens.

Bart

It seems that the Insomnia tool does what it promises. The laptops both did not sleep since I installed it.

Of course, this does not answer the questions what the real cause of sleep is.

Bart

I am sure it is sleeping and not hibernating. The power led is blinking, and when I press the power button the system is back on almost immediately.

I am not sure how the system behaves when on battery. All my observations are done when on AC power.

Bart

Amazing! I have been struggling with this for years! Microsoft sure knows how to hide this feature!

Thanks a lot.

Bart