The following link should help you out with any troubleshooting not provided by the Media Advice Archive in regards to basic CD Burning problems. Basic CD Burning Troubleshooting. Windows Media Player just uses the systems IMAPI Burner. Upgrades or downgrades from WMP 8 to 9 or 9 or 10 should not really fix much. The system burner is not very good, thus if the information here does not help you at all, it’s best just to use a good program to burn CD’s with until a new IMAPI Burner is built.
In addition to the page above you will want to reinstall Windows Media Player over itself. Windows Media Player Download
The following link should help you out with any troubleshooting not provided by the Media Advice Archive in regards to your CD Burner not being detected in Windows Media Player. Additional Device Not Detected Information. Also view Your CD-RW drive is not recognized as a rewritable drive in Microsoft Windows XP Service Pack 2.
If nothing above helps you in troubleshooting Windows Media Player and CD Burning then you should try the Nero Fast Burn Plug-In. Currently, this plug-in works with WMP 9 only. Ahead Software will hopefully have a new version out soon that will work with WMP 10.
Media Advice Archive