I replaced the cd/dvd drive in my aspire 7750G-6645 with a PIONEER BD-ROM BDCTD02RS...the computer recognizes the drive but I am unable to play a Blu-Ray movie...in Windows Media Player I get the following message Windows Media Player cannot play the DVD. The disc was created in a manner that the Player does not support...using PowerDVD 9 I get the following message There is a disc with an unsupported format in Drive D:. What am I missing? Can I get this to work in my 7750G...is there software, drivers, or firmware I need. Any help will be much appreciated.