Restarting the computer is an important step after making changes to the system because it ensures that all the changes are applied properly and that the system is running smoothly. Restarting the computer can help to clear any temporary files or processes that may be causing issues, and it can help to ensure that any changes you made to the system are fully implemented.

Restarting the computer can also help to resolve any issues or errors that may have been caused by the changes you made to the system. For example, if you installed a new application or updated an existing one, restarting the computer can help to ensure that the changes are fully implemented and that any conflicts or compatibility issues are resolved.