Everyone wants everything to work well all the time. Sometimes, they don't. The Windows app doesn't run as fast as you'd like. The pop-up says this program is not responding. The whole computer stops working.
Force quitting the unresponsive app is the best option in this case. The program will be forced to close if it is in the middle of something. There are a number of ways you can do this. They're here.
Press Alt + F4 if you want to program your row. This will close the application you have chosen.
If you want to bring Task Manager up directly, you need to press the following buttons. You can close the application by selecting it and clicking the end task.
Command Prompt can be pulled up by pressing Windows and R. Press enter if you want to type cmd. Press enter if you want to type the tasklist. To type taskkill, use the keyboard.
You might need to restart your computer if none of these works.