Trick To Enable / Disable "Task Manager"

Learn what to do if Task Manager won't start or you can't locate it.

Here are solution !

1. Click Start
2. Click Run
3. Enter gpedit.msc in the Open box and click OK
4. In the Group Policy settings window

•  Select User Configuration
•  Select Administrative Templates
•  Select System
•  Select Ctrl+Alt+Delete options
•  Select Remove Task Manager
•  Double-click the Remove Task Manager option

since the policy is Remove Task Manager, by disabling the policy, you are enabling the Task Manager.