Error ORA-12541: TNS:no listener
As a quick fix, you can just remove the entries (with respect to your database)from both the tnsnames.ora and listerner.ora.
In your scenario, remove this from tnsnames.ora

 PROJECT =  
      (DESCRIPTION =  
        (ADDRESS_LIST =  
          (ADDRESS = (PROTOCOL = TCP)(HOST = admin-xxxxxx)(PORT = 1521))  
        )  
        (CONNECT_DATA =  
          (SERVICE_NAME = PROJECT)  
        )  
      )


and this from listerner.ora

SID_LIST_LISTENER =  
  (SID_LIST =  
    (SID_DESC =  
      (SID_NAME = PLSExtProc)  
      (ORACLE_HOME = F:\Oracle)  
      (PROGRAM = extproc)  
    )  
    (SID_DESC =  
      (GLOBAL_DBNAME = PROJECT)  
      (ORACLE_HOME = F:\Oracle)  
      (SID_NAME = PROJECT)  
    )  
  ) 


and then you can try to open up the database.
These entries would be created automatically.
And we hope the listener listens to us this time.