Task Manager

Task Manager is a system tool introduced in Windows NT 4.0. It is a tool for managing and killing running processes. It replaces the Close Program dialog from the 9x family of OSes.

It can be launched in a few different ways:
 * Pressing CTRL+SHIFT+ESC starts Task Manager immediately.
 * Pressing CTRL+ALT+DELETE and selecting "Task Manager" (until Windows Server 2003 R2 and then since Windows 8/Server 2012) or "Start Task Manager" (Windows Vista/7/Server 2008 (R2)). When the welcome screen is enabled, Windows XP will launch Task Manager immediately.
 * Running  from the Run prompt or the search bar. The executable is located in the Windows folder of the system drive.
 * Right-clicking the Taskbar and selecting "Start Task Manager" (until Windows 7) or "Task Manager" (since Windows 8).
 * Since Windows 8: Pressing Windows button+X or right-clicking the Start button (since Windows 8.1) and selecting "Task Manager".

Features
The Task Manager is intended to be used to kill non-responsive tasks, however it can also kill running tasks and even system processes like,  ,   or  , which are important for a running system. Terminating one of these or similar processes can result in the system become instable or immediately crashing with a CRITICAL_PROCESS_DIED bugcheck.

It can also execute new tasks by selecting File > "New task (Run...)" (until Windows 7) or "Run new Task" (since Windows 8), which launches a window similar to the Run dialog invoked by Windows button+R, but with an extra option to run the task as an Administrator. When the dialog is invoked on the built-in Administrator or the hidden SYSTEM account or in Safe mode, it displays a message that the task will be run as an Administrator, instead of the optional checkbox.

When selecting Options > "Always on top" it overlays himself over all running windows, even when a new windows has been launched. On some circumstances, this option is already enabled.

The Task Manager can also be used for checking performance. When selecting the Performance tab, it shows the utilization and amount of CPU, RAM, plugged disk drives, GPU and the current internet connection.

On the Users tab, it shows all currently available user accounts. It can also sign them off or disconnect when they are currently signed on.

History
It was implemented into the Windows NT systems starting with Windows NT 4.0. Since then, it hasn't seen much changes. Windows XP's Task Manager includes a "Shut Down" menu on the menu bar on some circumstances, having the option to lock the computer/workstation, shut down or restart it or set it into hibernation or sleep mode, as well as sign off the current user.

Task Manager gained a massive overhaul with Windows 8, resulting in some options being moved or renamed. For example, the Processes tab is now named Details. It comes also with a lightweight version of himself, which only shows running tasks (without Windows Explorer) and can be expanded to the normal Task Manager with the "More details" option locates in the bottom left of the window. It also gained a new option to restart Windows Explorer (when shown on the Applications tab) by selecting the "Restart" button oh the bottom right of the window (which is normally an "End Task" button) or right-clicking on Windows Explorer and selecting the Restart option.

With Windows 10 October 2020 Update, Task Manager gained an option to show the utilization and temperature of the GPU.