We have two relatively new identical ProDesk 400s running Windows 10. The computers often go into hibernation over night, preventing us from being able to log in remotely, and we can't shut off that feature. Our IT guy is also baffled. We have tried:
Turning off hibernation in Windows
Turning off hibernation in a command shell being run as administrator
Changing the Windows power settings to high performance
Turning off power saving options in the BIOS
Deleting Energy Star
Setting the BIOS to have the computer wake up every morning at 7:00 automatically
Basically, we have tried everything that makes any intuitive sense and anything the intertubes suggested we do.