While installing Exchange 2013 it reports there are Exchange 2003 servers in the network when there are not

While trying to install Exchange 2013 you receive the error message "A reboot from a previous installation is pending. Please restart the system and rerun setup.
October 2, 2013
If you just installed Exchange 2013 and you have an Exchange 2010 mailbox you cannot access EAC you get the old ECP management
October 2, 2013