Task manager comes really handy when your windows hangs! This is your last option to kill the useless processes. But some times some viruses have a capability to disable task manager from windows. In this situation you are not able to end the hanged applications & heavy processes.
To Enable Task Manager
Start → Run → gpedit.msc (type) → Administrative Templates → System (double click) → Ctrl+Alt+Del options → Remove Task Manager → properties → disable (select) → Ok
To Disable Task Manager
Start → Run → gpedit.msc (type) → Administrative Templates → System (double click) → Ctrl+Alt+Del options → Remove Task Manager → properties → Enable (select) → Ok
