I can write dvds, but I Can't read any dvds!

I was very happy with my Liteon1213@1633 :smiley: a great toy!.. But now… I only can write dvds, i cant’s read them, or any else… I Try diferent medias, diferent software (KPROBE HANGS)… but no success… :Z… It’s strange… it only recognise the empty media…

Ps. No Costers :eek: … they play very well in my cyberhome!