Cannot read autoplay cd/dvd (lg gsa-4167b)

My system locks when i try to play a cd/dvd with an autoplay feature. Everything is ok when a put cd/dvd without autoplay (ex. a backup dvd i created). When it locks, I can open the dvd and then it's back to normal. If i don't open the dvd, i eventually get a blue screen of death.....

Sometimes it works, but only for a while. I tried installing my HP printer setup, while installing (after a few minutes), i got the blue screen.

I tried to turn off autoplay with twekui, but it doesnt work.

PLease help me