It seems like you are experiencing sound output issues on Windows 7 even though the audio driver appears to be working properly. Here are some steps you can try to troubleshoot and fix the sound output problem: 1. Check Sound Settings: - Right-click on the speaker icon in the system tray and select "Playback devices." - Make sure the correct playback device (internal speaker or external speaker) is set as the default device. 2. Update Audio Driver: - Ensure that you have the latest audio driver installed. You can check the manufacturer's website for updated drivers for your specific audio device. 3. Restart Windows Audio Service: - Press Windows key + R, type services.msc, and press Enter. - Locate "Windows...