It seems you're experiencing issues with Aero transparency in Windows 7 after installing the Realtek HD Audio Driver and Live Mesh Client. This can sometimes happen due to conflicts with certain drivers or software, causing visual anomalies in the Windows interface. One possible solution to fix this issue of transparency turning off unexpectedly is to reset the theme settings. Here's what you can do: 1. Go to "Control Panel" > "System and Security" > "System" > "Advanced system settings" > "Settings" under the "Performance" section. 2. Ensure that the "Enable desktop composition" and "Enable transparent glass" options are checked. 3. Click "Apply" and "OK". 4. Go to "Control Panel" > "Appearance and Personalization" > "Change the theme"...