How to enable Task Manager when it is disabled

U might have seen some times when u try to access taskmanager error pops up
"Your taskmanager is disabled by ur administrator" though u are the admin.
here is way to solve it.
u must be Admin not limited user on ur machine for this

Goto run type gpedit.msc
hit enter
now on left pane select User configuration
then select Administrative templates
then select system
then select CLT-ALT-DEL option
double click it now look on right pane
Double click on Remove Task manager
select option Disabled
click OK
thats all taskmanager will be enabled.
There is another way by using registry. It is as follow:

Click Start -> Run, and then type regedit, then press Enter. In Windows Vista, just type regedit in Start Search, and press Enter.
Navigate to the following registry key:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
Locate DisableTaskMgr in the right pane.
If found, right click on DisableTaskMgr, and select Delete to remove the registry entry, or set its value data to 0.
Value one means to disable and value 0 is to enable.