How to disable”Turn Off Computer”button in XP?

You can disable the “Turn off Computer” button on the start menu and a common user will not “Turn Off, Restart and Stand By” a computer. Using registry editor, you can implement this task in all windows XP versions with minimum effort.
Follow the given steps to disable Turn off Computer” button on the start menu:
To use this feature, you will need to be logged into your computer with administrative rights.
Click Start button and type regedit in Run option then press Enter for next.



Here locate the location to:
HKEY_CURRENT_USER\Software\Microsoft\Windows\Curre ntVersion\Policies\Explorer
Here in right side panel, right click to create a new DWORD value with the name NoClose.

Now assign number 1 in value data box and close the registry editor.


Now close the registry editor and restart your computer after any changes to go into effect.
But next time, if you want to enable “Turn Off Computer” button on start menu then simply change the value of data box to 0 or delete NoClose DWORD item.

Turn Off System Beeps

Go to HKEY_CURRENT_USER\Control Panel\Sound, and find the Beep and
ExtendedSounds String values. Set each value to No. Exit the Registry and reboot.
The beeps will no longer sound. Hey, your XP is no longer noisy!!

Automatically Killing Tasks on Shutdown

You know the drill. You start to shut down the computer, you wait a few moments,
and then you see a dialog box asking if you want to kill an application or service that
is running. Instead of prompting you, you can make Windows XP take care of the kill
task automatically. Here's how:
1. Open the Registry Editor.
2. Navigate to HKEY_CURRENT_USER\Control Panel\Desktop.
3. Highlight the value AutoEndTasks and change the value to 1.
4. Close the Registry Editor