It seems like the issue with event sounds not working on your user account in Windows 7 RC while they continue to work on another user account can be specific to settings or configurations related to your user profile. Here are some troubleshooting steps you can try to resolve this issue without rolling back the updates: 1. Check Sound Settings: - Go to the Control Panel and navigate to "Sound." - Check the playback devices to ensure the correct one is set as default. 2. User Account Settings: - Try creating a new user account and see if the sound works there. This can help determine if the issue is isolated to your current user profile. 3. Sound Troubleshooter: - Use the Windows sound troubleshooter to automatically...