12.Reassemble and test the computer.
Replacement Note: When reinstalling the optical drive, ensure that the bulb wire cable is safely within the case edge so that it will not get pinched by the bottom case.
Important: Make sure the bottom case is installed correctly. If the
Important: Check the operation of the optical drive. If the drive is installed incorrectly, the optical drive mechanism might not spin correctly and will result in mechanical noise when playing a disc.
