Plextor 716A Autostart?

Hi All;I need help please. I have a plextor716A on a WinXp Pro Machine,How do I get this plextor to recognize a different disc?? I put in a dvd,explore the dvd and I see the dvd files.I eject the dvd,put in another dvd,say with data files on it or anything else,close the drive,and I still see the Dvd??I have to reboot to see another dvd.When I reboot and put in another dvd it see’s it fine,so I know I don’t have bad disc’s…Anyone Help me out??.Do I have something set wrong in Windows?..Thankyou in Advance.

It usually ASPI related, reinstall ASPI 4.60.