Press Windows + R to launch the Run Type taskmgr in the dialogue box and press Enter.In fact, there are four ways to open Task Manager: You can use Task Manager to start and stop programs and to stop processes, but in addition, Task Manager will show you informative statistics about your computer's performance and about your network. It enables you to monitor the applications, processes, and services currently running on your PC. Task Manager is a system monitor program which provides information regarding the general status of your computer and the programs and processes running on it. Other Quick fixes to the unresponsive Task Manager What Is Task Manager Enable /Activate Task Manager in every way Solution 4. Change/Switch the user account Solution 3. Upgrade Windows to the newest version Solution 2.