Specific error messages might reveal some hints, is the database running?
... password ... Connected.
select status from v$instance;
... OPEN ... ???
>> my pc name to 127.0.0.1
That's localhost, or the loopback address, its good for checking if TCP is installed and not much else. Output from an `ipconfig /all` will have the info needed for a listener setup. If that address is where the listener HOST= is pointing to, no remote connections are possible. But sounds like that's one of the lesser critical problems, that one can wait 'till the others are sorted out.
Message was edited by: clcarter