Administrator of a computer usually lock the Task Manager for security reason. From Task Manager, we can close entire programs with little clicks and including close Anti-virus, Tracker, Key Logger, and some other "Spying Program" to track users by using that PC. But how if we got it hanging or lagging or even stuck-frozen in a Not-Responding Application?
As long administrator doesn't disable the Start Menu and 'Run' feature, we can do it. Just easily go to Start Menu and click "Run". Enter the code below:
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 0 /f
And enjoy, you can use Task Manager as well.