How to enable Task Manager in window 7/Vista/xp very Easy Way

How to enable Task Manager in window 7/Vista/xp very Easy Way
That's a very common problem for Windows users. Many times when you try to open Task Manager, you find that "Task Manager" option has been grayed out:

Also when you try to run it by typing "taskmgr" in RUN dialog box, Windows shows following error message:

Task Manager has been disabled by your administrator.

There might be 2 possible reasons behind this problem:

1. go to start menu and open run or command prompt and serch for this,

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System
HKEY_USERS\.default\Software\Microsoft\Windows\CurrentVersion\Policies\System

and look for a DWORD value "DisableTaskMgr" in right-side pane. If you find it, delete it.


3. That's it. Now Task Manager will be enabled.