Computer no longer recognizes D:/ drive (CD drive)?

Right click on my computer and select properties and go to device manager, see if there is a yellow exclamation mark next to the atapi device, if so then you will need to get winxp drivers for it, which shouldnt be too hard. if that does not work there maybe upper and lower filters in the registry that prevent the drive from being detected, you may need to delete those to get it to work. However, prior to doing this 2nd step make sure you backup your registry before messing with it as any miscalculations on your part may cause your computer to crash. Look at the link below for more info on this step.

You say you just upgraded to XP. Aren't you about 8 years late?

Anyway check the BIOS first.

Next boot off the Windows CD to see if it sees the drive.

If it does see it then you are having trouble with the ATAPI drivers in Windows.

This can get complex from here so check out the basics first.

It may not have a drive letter assigned to it in Windows. Go to the control panel, administrative tools, computer management, drive management, storage, disk management, scroll down on the right side to find the cd drive and see if it just says disk 1 , disk 2, then right click on it and select change drive letter, select the first available

letter and click OK.

well... no... plug and play should recognize it guys... because if you see it in the bios... Windows supports it if it's plug and play... i didn't need a driver when i bought mine a year ago... and plug and play picked mine right up... so... there should be no problem of it not picking it up on your computer. so... just how old is your computer?

Try formatting the computer then install all of the drivers again