In case you installed SQL evaluation edition and trying to upgrade it to a licensed copy you will probably face to service is not staring with:
error code 17051, Severity: 16, state: 1
SQL Server evaluation period has expired
(viewing Errorlog)
Here is relative article that will help you.
https://www.codykonior.com/2017/11/30/upgrading-an-expired-sql-server-2016-evaluation-edition/