you should know these three methods to open windows task manager
Let’s start with the easiest way first: Ctrl+Shift+Esc. Press those three keys together at the same time and Task Manager will launch.

CTRL+ALT+DEL, which opens the Windows Security screen, is another way. In Windows XP, this shortcut opens Task Manager directly.

Another easy way to open Task Manager is to right-click or tap-and-hold on any empty space on the taskbar, that long bar at the bottom of your Desktop. Choose Task Manager

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