Which startWebLogic.cmd did you delete? In every WebLogic setup, two of these scripts get created:
1. One is found in %MIDDLEWARE_HOME%\user_projects\domains\%DOMAIN_HOME%
2. One is found in %MIDDLEWARE_HOME%\user_projects\domains\%DOMAIN_HOME%\bin
If you deleted the one in location 1, this is no problem at all as the startWebLogic.cmd only calls the one in location 2. Use the one in location 2 and the WebLogic server will start up no problem.
If you deleted the one in location 2, you will need to find a startWebLogic.cmd script used for another WebLogic domain and modify any paths which correlate to the domain you are using now similar to what someone else mentioned in this thread.