He has verified that the cables are all plugged properly and the lights blink on start-up so we know there is power to both of them. At first it was only one drive and he thought it had to do with dirty head. So he bought a cleaning kit at the local computer shop and ran it on both drives. Now the PC won't use either of them. It still shows the drive designations in Win Explore but won't access any info.
He thought maybe the cheapie ccleaning kit ruined the drives so he went out and bought a new Sony combo CD-RW/ DVD-ROM drive. When he went to put that in now Win Explorer doesn't see either of the optical drives new or old. There is no menu for optical drives in his device manager either so it is like the computer has completely ignored them. He tried to scan for new hardware through device manager and the light cycles on and off several times on the new drive but he gets no results other than that. He also tried running the add hardware function from the control panel and gets the same results nothing.
Any help here would be appreciated.