Why there is sound but no image or still image?
1,If there is sound, it indicates you have passed user identity verification. It could be that there is not enough bandwidth to watch a video online, and as a result you can only hear sound.
2,To solve the problem, just download and save the video file on your computer. When it finishes download, click the file, and Windows Media Player will play the video automatically. Then all you need to do is follow the instructions .