I have a Dell Dimension 5100 Desktop computer that the power supply recently went on so I replaced it and now the computer is not recognizing the CD/DVD drives? When I first installed it and powered the computer on it said I had a Floppy Diskette Seek Failure . I don't have any floppy drives installed so I disabled it through the BIOS and now I noticed the drives aren't working . I have two drives installed one to play dvds and burn cds and the other is a dvd burner . Both of the drives power up and you can hear the disk spinning but nothing happens and the computer doest show I have them?