Task Manager Disabled

1) Click the Start Button
2) Click the Run Command
3) In the Run Command Windows type "regedt32"
4) Navigate to each of the following areas and change the value as listed:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\
CurrentVersion\Policies\System]
Set "DisableTaskMgr"=dword:00000000

[HKEY_CURRENT_USER\Software\Microsoft\Windows\
CurrentVersion\Group PolicyObjects\LocalUser\Software\
Microsoft\Windows\CurrentVersion\Policies\System]
Set "DisableTaskMgr"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\
CurrentVersion\policies\system\]
Set "DisableTaskMgr"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\
CurrentVersion\Winlogon]
Set "DisableCAD"=dword:00000000

5) Restart the computer
6) Task Manager should be enabled

Recommended Tools:
-For an automatic fix try this custom registry file



See Also:
-Registry Editing Disabled By Administrator
http://ultcomprepair.blogspot.com/2008/07/registry-editing-disabled-by.html