Ok. I ended it.
After I ended it, I tried to connect to the service but i could not.
After reboot, I've run Net8 Configuration Assistant in order to check LISTENER settings. At the end, when it asked me "Would you like to configure another listener" and I answered "No" it stuck again.
So - then you have the Oracle"SID"TNSListener service already. Finish the task manually. Go to %ORACLE_HOME%\network\admin directory. Open listener.ora (create it if doesn't exist) and paste the lines below (make changes for your setup - in "" quotes)