Replacing Hard Drive
Turn the computer over, loosen the tw o captive screws on the hard drive cover, and then remove the cover.
Loosen the four captive screws on the hard drive cage and then lift the pull-tab to flip the cage towards the center of the computer so that the SATA cables and connec tors are accessible.
Carefully remove the SATA cables from the hard drive or drives that are installed in the cage.
Remove two screws on each side of the hard drive cage to free the hard drive, then lift the drive out of its tray in the cage.