engage the computer's connectors, pull the hard drive back out and try again. Then fold the Mylar sheet back over the hard drive. 8. If the ribbon cables are no longer tucked into the frame, then push them back into the recessed openings with a paper clip, as shown below. Re- insert the keyboard by engaging the four front tabs on the keyboard into the four slots in the computer frame, pressing down on the keyboard as you insert the tabs. Make sure the ribbon cables slide into the recessed openings and do not extend under the keyboard. 55