Games "freezes" at main menu

Posted on Friday, July 16, 2010

Operating System: Windows 7 Premium 64 bit
Processor: AMD Athlon II X4 630 (4 CPUs) 2.8GHz
Memory: 6144MB RAM
DirectX Version: DirectX 11

Chip type: ATI  display adapter(0x9710) ATI Radeon HD 4200
Display Memory: 2941 MB
Driver Date: 8/18/2009

Does Game Work:  It did at first, until I decided to change it from full screen to windowed.  When i restarted the game, the Stardock video comes on and then goes to the main menu.  From there the game acts odd.  It doesn't freeze because I can move the mouse around, but it will not allow me to click on any of the buttons.  I can't even start a game or click on options.  I've tried uninstalling and reinstalling the game numerous times.  I have even downloaded the updates.  No success. What's the problem?