Well, not lot of response 😉
But I’ve solved the issue. I recieved a new image of the GTBook from the supplier.
Basicly is was a WinPE image with some settings for auto -reinstall of Windows 10.
The issue is within the pre-installed version of W10. The POWER OFF state only occured within Windows. In the BIOS screen the laptop never automaticly gone to OFF state.
So the re-install of Windows 10 solves the issue!!
Maybe my image was pre-configured with the GTBook drivers, because I had no issues with drivers after the WinPE Windows 10 re-install!
