List the inventory ID of the virtual machine with the command:

vim-cmd vmsvc/getallvms |grep <vm name>

Note: The first (leftmost) column of the output shows the vmid.

Check the power state of the virtual machine with the command:

vim-cmd vmsvc/power.getstate <vmid>
   

Power-on the virtual machine with the command:

vim-cmd vmsvc/power.on <vmid>