Answer:
Open Task Manager and end the process associated with the application.
Step-by-step explanation:
When using a computer installed with the Windows Operating system and an application is not responding to the mouse or keyboard input, you can end such application process without exiting other open applications by opening the task manager using the key combinations "CTRL + ALT + DEL". This would open the Task Manager showing all the open application and then you can end the process associated with the application that is not responding.