Ok i have both a cd and dvd drive that have power they open close normally etc, its just that they are not recognised by the system or bios!! this has happened before so i unplugged the ide cable swapped it round still didnt work so not the cable! i then decided to move the pc so everything got unplugged when i started it back up it was recognised!! but its only been recently when i had to unplug everything again and install a new graphics card etc that they are no longer being recognised, again still powered open and close but not in bios or anything! would this be a problem with the motherboard or the drives??? because they are getting on a bit at several years old, if anyone could help it would be brilliant, Thanks