The HKEY_Current_User\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced registry key contains the Value Names that enable and disable the display of the subject icons on the Start Menu, per the following table:

   Icon    Value Name
   Control Panel    Start_ShowControlPanel   
   My Documents       Start_ShowMyDocs   
   My Pictures    Start_ShowMyPics   
   My Music    Start_ShowMyMusic   

A Data Value of 0 hides the icon, a 1 shows it, and a 2 causes it to expand when the cursor hovers over it.

To use the command-line to hide Control Panel:

1. Open a CMD.EXE window.

2. Type the following command and press Enter:

<b><font size="1">REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /V Start_ShowControlPanel /T REG_DWORD /F /D 0</font></b>3. Log off and log on for the changes to become effective.