The soft reset is equal to pressing "CTRL+ALT+DEL" and triggers a reboot under Linux systems. 
This mode isn't usable under Windows systems.

! The soft reset isn't usable in the new ResetSystem and therefore shouldn't be used anymore !

The hard reset is equal to pressing the reset button on the casing and triggers a hard reboot. This can bring your file system in a state of inconsistency. The file system is being checked during the startup. If the check fails a manual repair is to be performed via Rescue System. 

Enable "Bestätigung per Email:" to receive an eMail when the reset has been triggered (Hint: the eMail could arrive slightly delayed due to technical reasons).