Hello,
It seems Windows Media Player gets CD information, such as the artist and album, from an online service. If the internet fails or the service settings are blocked, the information may not load. First, ensure your computer is connected to the internet. Then, in Windows Media Player, go to Tools > Options > Privacy and check that Retrieve media details from the Internet is enabled. If it is enabled, we should verify that your hosts file or registry is not blocking the metadata source. I can help you with that if needed. Are there any error messages, or does it just display Unknown Album and Unknown Artist?