Lightscribe HP DVD 640b DVD/cd writing drive

I have a Lightscribe HP DVD 640b disk drive that i am having problems with

I can read a dvd that has been burned on my sister's laptop but i cannot read movie dvds or blank dvds

when i insert a movie or blank dvd my drive begins to process it and stops

going to my computer just causes my pc to freeze

i checked in bios and it is installed and dvd is enabled

Please help!!!

thanks