I have a Philips 8631 DL Burner! I know from posts its not the best out there but I never had a problem backinguo any movie with dvd1click/clone/img! OR ANY GAME! Until I bought a lite on LH-2B1S burner! Installed and upgraded the cpu/video card! No matter what I do every burning program fails with Ver. DL made in Singapor! Put everything back to the old setup and still does not work! The only thing I can burn is a 4.7 sony+/- R compressed movie!!! And BLU-RAY are OK??? Nothing with DL?? CAN ANYONE HELP??????