How to Enable or Disable Windows 7 Aero function

Please try to Enable or Disable Windows 7 Aero function by following instruction steps:

1. Click the "Start" button,and type in "regedit" in the search box, then press Enter.
   
2. Go to the Registry Editor. 
3. Navigate to the registry key as follows: HKEY_CURRENT_USER\Software\Microsoft\Windows\DWM If this keyis not found, try to right click on Windows and then select New -> Key to create new branch and name it as DWM.
   
4. Create a new DWORD (32-bit value) named UseMachineCheck, and set its value to 0 in the right details pane.
   
5.  Create a new DWORD (32-bit value) named Blur, and set its value to 0 in the right details pane.
   
6.  Create a new DWORD (32-bit value) named Animations, and set its value to 0 in the right details pane.
   
   
7. Restart the Desktop Window Manager Session Manager in Services in Control Panel (type Services.msc in Start Search), or run the following commands in a command prompt with administrator privileges:
   net stop uxsms
   net start uxsms
   
   
   
8. Restart the computer to enable Windows Aero function.

Need composite window manager running on top of Direct3D 9.0Ex, and provides device driver interfaces required by Direct3D 10 runtime used in Windows 7.