Sorry about my lack of information. Also about not finding the Post & thinking this worked like a chatline!
My XP had an A:// for old floppy's, a B:// for DVD/CD rewritable, & , of course, C://.
My hardware mgr has a - in front of CD-ROM & an ! in front of the driver. I downloaded a new driver from Dell & installed it. The install wizard said there was nothing wrong with the old driver but I installed anyway, tried rollback, too, but still no CD-ROM & no B://. I tried to install a USB CD-ROM but it only loaded the driver so went to Dell diagnostics (iffy at best) & ran a diagnostic on the new USB: failed tests, driver passed. Ran diagnosticas on installed CD-ROM & it's driver & they both passed.
The Dell resource CD worked in the installed CD-ROM in diagnostic but the CD-ROM was dead again when I started up windows. Completely uninstalled the USB CD-ROM.
Have already tried the uninstall/reinstall on installed driver. Friend told me I couldn't get the B:// back until the computer recognized the CD-ROM & has gotten about 10 books on the XP to see how to solve the problem but is no tech. Is there a way to reinstall the CD-ROM in my PC? Other suggestion?