strange problem

[sj46278]

I have a delta 12 x dvd rom and when i tried to play the dvd for a moment before starting the smartripper it worked fine and i could see the smartripper unlocking and doing things.after a min or so my computer froze and i had re boot the machine and when i re started the machine and used the same DVD,but my dvd rom does nt recognize it.
i dont know whta the problem is but i could play other dvd's except this particular dvd which i used once in it.
any help is appreciated.

[statuspending]

i just bought that dvd-rom drive yesterday @ circuit city.
not bad for twenty chalupas eh

try using the windvd software that came with it first. play the dvd for a few seconds and then use smartripper. this will unlock the dvd so that you can rip it.