Why when I want to open window task manager this massage will appeared(Task Manager has been disabled by your administrator).....anybody can solve my problems....
[Start] [Run] [Regedit]
Registry Key: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
Modify/Create the Value Data Type(s) and Value Name(s) as detailed below.
Data Type: DWORD Value // Value Name: DisableTaskMgr
Setting for Value Data: [0 = Enabled (Default) / 1 = Disabled]
Exit Registry and Reboot
It is sometimes disabled by programs, and is not related to his account status. If he is at school it will be disabled, and he wont have access to the registry.