Hi again Thuan,

First off, I think you should ask one of the mods, like alan1476, to move this and start a new thread. You should get a better response. I'm afraid your problem will get buried here.

Have you made any changes to your system, installs? uninstalls?, etc., in the last 2 days or has this just seemed to occur spontaneously?

Do your optical drives work ok outside of Fab?