If you just install Windows 7 Professional 64-bit and having trouble installing Alienware Command Center which comes from Dell Support, you might want to try this workaround to install it successfully. In case clean install of Windows 7 64-bit causing Alienware Command Center broke FX-lighting, this might caused by SLI graphics.
Users have been reported trouble related to Hybrid SLI graphics in Alienware M17X systems when installing Windows 7. A workaround to this problem is going to install original Alienware Command Center which comes with your resource CD. Replace the current version you have. This might give you errors, but it is going to install most of essential files. Don’t reboot but instead end the task when you get error. After that, install the newest patch version of Alienware Command Center.
You should be faced by menu which ask you whether you want to repair the installation or remove. You should select remove, which will uninstall the conflicting files and reinstall the current files. Remember that you need to do this with Administrator account. After it is done, restart your machine.