Are you running esxi on workstation or in Hyper-v ?
Do you see any events in the logs ? ( /var/log/messages , /var/log/vmksummary.log, like DCUI: reboot )
Are you running esxi on workstation or in Hyper-v ?
Do you see any events in the logs ? ( /var/log/messages , /var/log/vmksummary.log, like DCUI: reboot )