Thank you for replying Kerry 56
Here are thing i have done and found out
downloaded the TSST sn208AB latest firmware update from there website and tried but it says no drive detected .
however i brought original commercial movie DVD's and i read it on the cover that it can play on a PC , the dvds are region free (for all region) , and i have tried using the ISO Buster inorder to read the dvd but no go , but when i boot the computer to safe mode and try reseating the dvd several time it read its once in every 7 or 8 time , and when the DVD is played on a dvd player it play fine .
thanks and Regards,