my operating system is windows xp professional version 2002, it is custom built, last few programs installed are virtual dj. my problem started about a couple weeks ago i wanted to burn a cd and then i realize that i could the program nero did not recognize the cd that inserted into the drive. i tried another cd and the same problem prevailed. I looked in my computer and realized that the cd rom drive was missing. I however can open and close the cd rom drive. If any help can be giving i would greatly apreciate it.