Thanks for providing this wonderful walkthru! I replaced a faulty HDD (Fujitsu) with the same brand (turns out, very important). Anyway, I have a couple of suggestions to improve the instructions a bit.
First, 2 small screws were in different locations from your image. The small screws from the back corners really came from under the pads. It wouldn’t hurt to put the long scews there as they go into hollow standoffs, but it would damage the screw threads.
Second, I thought it would be useful to update the instructions for replacing the screws with the size of the screw… Oh, and there are 2 steps numbered “25”
So, here are my suggested edites (in bold):
22. Put back the bottom-left special hdd small screw in the disk cradle (removed in step 11).
23. Push the drive connector back down.
24. Put the top cover back on (front-first).
25. Reattach the top cover ribbon cable (removed in step 9).
25a. Replace the long screw in the top left of the case (removed in step 8 ).
26. Re-attach the keyboard ribbon cable, remembering to clip down the connector that holds it in (removed in step 7).
27. Put the keyboard back on, bottom first, making sure the two clips above F6 and F11 snap into place to hold it down.
28. Turn the laptop over, and replace the small screw inside the memory compartment (removed in step 5).
29. Replace all twelve screws in the bottom of the machine (removed in step 4). 2 small screws in the battery compartment, 1 small screw in the memory compartmentt, and 2 small screws under the sticky foot-pads. The remaining large screws go into the peremeter (including all four corners)