Er, how exactly do you change the jumpers? I can't see anything on the CD drive casing that looks like a jumper.

Thanks for the suggestions. I've a feeling it's a mobo issue, but I'll try the jumper setting.

Hi, I've been given an R40 2722 and have managed to coax it back to life. It has XP Pro installed and has all the IBM Utilities (I did a restore from the hard disk). Unfortunately, the CD/DVD in the UltraBay isn't recognized either in the BIOS or by XP. I disconnected the system battery, then reconn...