There is not a way to recover the administrator password. However, if you do encounter that problem check KB74811 and it will give you information on what to send to support. You will either need to have a backup available in another location to the ESM to gather those files. Or, you would need to boot the system to a bootable linux distro, mount the filesystem and copy the files off. Once we have those files we can reset the password to a default setting. Then when you add the files back to your ESM you can login with the default password.