The last few days, my cd drive is not being reconized on the "my system". I go to my system and I see the floppy disic drive, but I donot see the cd rom drive. I have roxio software and I cannot burn any cd or put any cd in the drive. I have taken the drive out and put back in, and it worked for a day. What is erasing the cd rom information in the system? I have windows xp.