To install a DVD player, first turn off and remove the power cord from the computer. Remove the metal protector from the drive bay by twisting it back and forth until it breaks. Slide the DVD player through the front of the computer and secure in place with screws. Attach the IDE (flat gray ribbon) cable or SATA (orange/red rubber) cable to the mother board by connecting one end into the IDE slot or Sata slot. Attach the power cable (multi-color wire with white connector at the end) to the power slot on the DVD. Close the case, plug it in and turn it on.