It used to work but now it will only play CDs already extracted. I have checked everything, but nothing seems to make it work again.
You can try using KmPlayer or VLC Media Player. These two audio/video players have the capability of playing Blu-ray players in their native mode without any codecs installed.
You can try using so many Blu-ray Players. Such as Macgo windows Blu-ray Player. And you need to buy a Blu-ray Drive.
You can use UFUSoft Blu-ray Player to play blu-ray discs and blu-ray iso files on windows
There are many free media players for Windows platform you can use to replace WMP. Actually, I don't use it that much for it occurs errors too much. http://download.cnet.com/Macgo-Windows-Blu-ray-Player/3000-13632_4-75453680.html?tag=mncol%3B9 Sometimes a 3rd party gadget works better than the app comes with the computer. Hope this can help you.
Reinstall the Windows Blu-ray player. Or you can download VLC or MacGo Media Player.