I am having some issues with my Lite-on DVDRW SOHW-1633S BSOY recongizing DVD\'s

[qanda]This question is published in the hardware section for the Lite-On SOHW-1633S. Click here to view full specs.[/qanda]My Lite-on DVDRW SOHW-1633S BSOY only wants to recongize certain DVD’s. Mostly the older DVD’s. Is there anything I can do to get it to recongize all DVD’s? I don’t know if I need to update something or what I need to do. I have not had any problems with it until recently and it is only with the newer DVD movies. I don’t have any problems with the older ones or with CD’s. Any help would be great. Thanks in advance.