1 - On Start Menu, choose "Run" and type Regedit.
2 - a) If you are using the XP style start menu:
Search for:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\NewStartPanel\

If you are working with the classic menu:
Search for:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\ClassicStartMenu\
3 - Inside, right click and create a new DWORD-Value with the name "{645FF040-5081-101B-9F08-00AA002F954E}".
4 - Right click on the new value, choose 'Modify' and change the Value to "1".