Whilst trying to launch the admin console via Internet Explorer, the following error appears: 'Page Cannot be displayed'. This suggests the admin service has not started correctly.
In order to identify the root cause, run the file to start weblogic via a command prompt. This is usually found under <Oracle Home>\user_projects\domains\bentley\bin.
Running the 'cmd' file in a command prompt will allow for any error messages to appear. This will assist in diagnosing the issue. For example, if the following error messages in the window:
<Critical> <WebLogicServer> <BEA-000386> <Server subsystem failed. Reason: weblogic.security.SecurityInitializationException: The loading of OPSS java security policy provider failed due to exception
..this suggests that some file corruption has occurred. In order to rectify this, a restoration of the folder: fmwconfig/config. Once restored, please make an attempt to start the Admin service.