If anyone had other suggestions to give, I'm all ears.
Have you remembered to run "Windows Experience Index (WEI)" rating?
That is required for Win7 to recognize that your graphics hardware is capable of running Aero or not, and allow it to be activated if your machine has met minimal performance requirements. The
Windows Experience rating includes several hardware measurements about CPU speed, memory speed, HDD/SSD speed, graphics capability and speed, etc., all combined to form a single calculated number.
Right-click on Computer, select Properties from popup context menu to get the System window.
In the middle of the System window in the section titled "System", is an active button that shows your Windows Experience rating. Or, if you've not run it, you should have something that says you must run Windows Experience for the first time. Or, maybe that your hardware has changed and you must re-run Windows Experience to catch everything up to date.
Another way to get to showing and requesting re-run of WEI is Start -> Control Panel -> System and Security -> "Check the Windows Experience in the "System" category.
Does this solve your problem? A computer with a base WEI score of 3.0 can run Aero and many of Windows's features at a basic level, but it might have issues running higher level functions, such as playing HDTV content or displaying themes at higher resolutions.