You can use Alt + F4, Ctrl + Alt + Delete, or the shutdown command. Here's how they work. Alt + F4 is a keyboard shortcut ...

You can press the ALT+F4 key combination to quickly close an app. But, first, switch to the app that you want to close and then press this hotkey. All your running apps are added to the taskbar.

To close an application, whose ‘x’ you cannot access, simply press ALT+F4 to close it. You will see several DWORD values that denote the window position. To reset, you need to delete these ...