The necessary information depends on the scenario.
If you have a problem with installation, please share the installation log. Instructions can be found here
If you have successfully installed PSpice for TI, and you now have a licensing error, please check out our FAQs here
If PSpice for TI has crashed while you are using the tool, please follow the instructions here
If you have unexpected results or errors during simulation time, please share your project in a new thread. See instructions on sharing here
In all cases, please check our FAQs here for a possible solution. If you cannot find a solution, please open a new E2E thread describing the issue and be sure to attach all relevant files (as described above). Open a new thread here.