Hard reset refers to a reset to factory defaults.
On the Euclid's web interface, there should be a tab option called 'Power'. Under this should be 3 options, one of which is 'Restart OOBE'. OOBE stands for Out Of Box Experience - the initial setup process when Euclid is first taken out of the box after you have purchased it. I do not know if OOBE resets the BIOS settings to factory default too though.