I am running Windows XP Pro, & I have both a CD-R/RW & DVD-ROM as part of my system. Windows suddenly is refusing to recognize either device ... it says the proper drivers are there, but it cannot locate the hardware. When I go to Windows Explorer & My Computer, the two drives corresponding to the 2 devices are simply gone. Windows recognizes all of the other devices, such as my 2 hard drives & the floppy drive. This happened once before, and I took my CPU ito my computer vendor who confirmed that there was nothing mechanical wrong. I erased the operating system & reinsalled windows, and it recognized the devices again. However, I had to uninstall & reinstall all of my software. It's suddenly happened again ... how can I get Windows XP Pro to re-contect with the 2 devices without having to complete reinstall the operating system from scratch? I am running a 1gig AMD with 526 megs ram.