Please check the connecting cables as well as the jumpers. Set it to Master by plugging the Jumper into the right pins. Next, make sure that the cable is properly plugged in with the red/white/green/blue line next to the power cable and not the another way around. Also, try and install the CD/DVD-Rom into another computer and check the errors. In case you encounter the same error but you have changed the cables, then it means that the device is broken and needs replacing.