[QUOTE=lailak;2178481]two operating system xp &vista but the operating systems screen not display but display white screen with three option in order to display the screen for choose the operating systems try test all option not work i know the problem hard ware after that i remove the driver for dvd the computer work normally but with out driver for dvd my question how repair the dvd drive?
i wash to understand me[/QUOTE]
I think I got the picture. I had this problem once with one drive, it was Sony.
Even computer guy, who I trust for his knowledge and all the test equipment/software he use, could not figure out what was going on.
I just simply removed the drive and problem solved.