My Thinkpad T42 DVD drive can play
avi files and CDs with no problem, but is suddenly unable to install programs from, making a repeated clicking sound, as though it's broken.........when in fact it isn't. What is causing this?
It could be a sign that the drive is on its way out. However, it could also be an issue with the firmware/driver. Go to the manufacturer's support site and download the latest drivers/firmware for the drive. See if that gets it going again.