It sounds to me you have the wrong driver installed for that model DVD drive I would remove the drive from the system and see if windows would start then if it does then i would go to
www.drivers.com and get the driver for that driver and reinstall the drive then when windows starts up again a say found new hardware tell it where to find the driver you downloaded. Be sure all the driver controller cables are plugged in tight and pin 1 on the cable goes to pin 1 on the drive. It is the driver that makes the drive read cds and dvds not the hardware if the drive is an older dvd drive then chances are it will only read -R discs not the +R discs