You just need to append rw init=/bin/bash at the conclusion of the linux entry and press CTRL-X to Enable it reboot, then change the password. The VAMI monitoring characteristic gives you Perception into what is actually happening using your VCSA. You can use it to monitor the VCSA's CPU, http://israelxrmfy.timeblog.net/17283607/vcenter-appliance-stuck-at-localhost-login-screen-no-further-a-mystery