Disable the Windows Key

Start/Run/Regedit
Create a new Binary value, or modify the existing value, called 'Scancode Map' and edit the value according to the settings below. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ Keyboard Layout. Value Name: Scancode Map, Data Type: REG_BINARY (Binary Value), Value Data: 00 00 00 00 00 00 00 00 03 00 00 00 00 00 5B E0 00 00 5C E0 00 00 00 00.