After installing OpenVMS 7.0, it is not possible to log in from the console.  This is not an Avanti bug.  The real AlphaServer 400 behaves the same way.

An alternative is to install the OpenVMS licenses during the installation process.  It is then possible to log into the system via TTA0.

Another option is to execute a conversational boot to log into the system and install licenses.  Here is one way to do this: