One wild guess is that the data cable is attached with the pins mismatched. In other words, the Pin 1 [the colored side of the ribbon cable] is on Pin 40. A rule of thumb if the cd is not marked is that Pin 1 is closest to the power connector. Mike Buraczewski [log in to unmask] -----Original Message----- From: Ashok Bhiman <[log in to unmask]> Date: Thursday, November 12, 1998 5:35 PM Subject: [PCBUILD] CDROM Drive not working | I have an old CD Drive which is not working properly. When the data cable is plugged in, there is |no display at all i.e. I cannot boot the system. If the data cable is removed, the system boots |and the CD Drive is energised i.e. the light comes on and I can both open and close it. Of courseit cannot be used since the data cable is not connected. PCBUILD only works if you contribute. Send your messages to be posted to: [log in to unmask]