I have 2 Hard Drives on my computer running Windows 7. One of the 2 H.D. all of a sudden stopped detecting the DVD ROm drive. It simply disappeared from the computer, although I can still open the tray by pressing the button. I thought it might be a corrupt driver ( cdrom.sys) and I replaced it with a copy of the supposedly good driver from he other H.D. It doesn'work! I also disconnected and reconnected the cable, to no avail.It can't be anything wrong with the drive itself, though, because it works perfectly from the the other H.D. operating system. I am really stuck because I cannot re-Run the Windows CD neither can I recover the drive image I had backed up, because it still requires inserting the boot disk of the backup software ( Paragon Backup).Can anybody help?Thank youIttiandro