To disable task manager click on "Start" and then open "Run" Box. Write "regedit" and than press enter. This will open registry editing settings. Now go at the following path -- HKEY_CURRENT_MACHINESoftwareMicrosoftWindows CurrentVersionPoliciesSystem" Right click at empty area and then select New-> DWord value. write the name for eg. DisableTaskManager Now right click on this DWord value and select Modify & Set its value to 0 for enable the task manager and 1 for disable the task...