If it is a home version of Windows, because there is no Group Policy, use the registry to fix it, and navigate to: Hkey_current_usersoftwaremicrosoftwindowscurrentversionpolicies, You do not need this step to establish an item named system under this registry key, such as a system item already under the Policies branch. The "string value" or "DWORD value" named DisableTaskMgr is then created under the System key to be changed to 0.
Q: I do not know how to toss, My Computer Task Manager unexpectedly was I disabled! Press Ctrl+alt+del and give me the prompt: "Task Manager has been deactivated by the system administrator." Right-click on the Taskbar pop-up menu, Task Manager is not clickable. How can I remove it?
A: I do not know what operating system you are using, if not the family version, you can use Group Policy to remove restrictions under the Administrator account: click "Start" → "Run" enter "Gpedit.msc" to open the Group Policy Editor, Expand in sequence: local computer → policy → user configuration → admin template → system →ctrl+alt+del option, in the list, open the Delete Task Manager property and select the disabled or Not configured single option in the Settings tab in the Delete Task Manager property to determine.