Hi myujraf,
The problem we have run into here is that there are no specific drivers for the CD/DVD or optical drive they are all generic Windows drivers. Then there is the fact that there are no drivers for Windows 7 for your model only Vista which might also be causing a problem. I recommend that you go to your Device Manager and under DVD/CD-ROM drivers right click what you see and select Uninstall and then restart the computer. Windows will then install the generic driver and hopefully that will restore your ability to play blurays.
Thank you,