The issue you're facing with your ATI HD 4870 512MB graphics card not supporting Windows Aero on Windows 7 might be due to compatibility or driver issues. Here are a few things you can consider: 1. Driver Updates: Check if there are updated drivers available for your ATI HD 4870 graphics card. Sometimes, updated drivers can improve compatibility with newer operating systems and features like Windows Aero. 2. Compatibility Check: Ensure that your graphics card meets the minimum requirements for Windows Aero. While the ATI HD 4870 is not an old card, it's possible that specific features required for Aero might not be fully supported. 3. Alternative Options: If driver updates do not resolve the issue, you might need to...