I have an hp pavillion ze5620 laptop with Windows xp. I bought this laptop off of ebay, and it worked great (DVD player worked well too), but obviously had some bugs. None of the Antivirus stuff I found got rid of it, and since it was a brand new laptop to me, I didn't have anything on the hard drive that I needed to save, so I erased my hard drive, and then reinstalled all of my programs with the cd that came with the laptop. But ever since my DVD drive doesn't work. The error messages that I get vary, depending on the program I use, as follows: DirectDVD: "Render failed- please try your dvd disc again" WinDVD "Windows Media Player cannot play the DVD because a problem occurred with digital copyright protection" or the audio will play, but no video shows up. Interactual "The DVD navigator was not detected. If you don't have one installed, you will need to upgrade your system. Otherwise, try to reinstall your DVD Navigator." These messages, and te connected help messages, of course, don't solve the problem. HELP ME!!!