It seems that you are facing an issue with the Terratec Aureon 5.1 PCI sound card's control panel causing your Windows 7 RC build 1100 system to hang when accessed from the system tray. Since you have already reached out to Terratec for support, and they have acknowledged the issue, there are a few steps you can take while waiting for a potential fix: 1. Compatibility Mode: You can try running the control panel in compatibility mode. Right-click on the control panel shortcut, go to Properties, then Compatibility tab, and try running it in compatibility mode for Windows Vista to see if that helps. 2. Task Manager: When the system hangs, you can try opening the Task Manager (Ctrl + Shift + Esc) to see if the process related to...