1. Log off from the computer. 2. Log on to the computer by using a user account that has administrative permissions. 3. Click Start, click Run, type regedit in the Open box, and then click OK. 4. In the left pane, click the following registry subkey: 5. In the right pane, double-click DisableTaskMgr. 6. In the Value data box, type 0, and then click OK. 7. On the File menu, click Exit. 8. Restart the computer.To set the DisableTaskMgr registry entry value to 0 for all users, follow these steps: 1. Log off from the computer. 2. Log on to the computer by using a user account that has administrative permissions. 3. Click Start, click Run, type regedit in the Open box, and then click OK. 4. In the left pane, click the following registry subkey: 5. In the right pane, double-click DisableTaskMgr. 6. In the Value data box, type 0, and then click OK. 7. On the File menu, click Exit. 8. Restart the computer.

i tried this process and when i got to the policies folder the only option is a folder called explorer not systems

Try this if it still doesn't work:

 

1. Press window key+r to show run prompt   

2. Follow the following steps

1. Enter gpedit.msc in the run prompt and click OK
2. In the Group Policy settings window
3. Select User Configuration
4. Select Administrative Templates
5. Select System
6. Select Ctrl+Alt+Delete options
7. Select Remove Task Manager
8. Double-click the Remove Task Manager option’.
9. Set the property of this item as disabled.

 

no im usiing windows xp