The hardware was stated working properly...anyone can help me?I jut bought it few days ago.
And it also cant write any file into the dvd+R because it cannot detect any disc
Post the text output of Nero Infotool as text file attachment using the Manage Attatchments button so we can have a look at your config.
Sounds like it could be a power issue. Other users have reported this happening. Try swapping the power line it is on currently with a different one and see if that helps matters any.