Z5771 Dead machine needs a teardown solution to get hard drives out and maybe memory

If all you want to do is remove/replace memory and hard drives no teardown of the is needed. Power down and unplug the computer.
*Remove the side cover. With a standard retail computer this can be a bit confusing; some have two screws on the rear of that side and the cover pops off. Others have hidden snaps or catches and the side comes off.
*Hard drives have either side screws holding them in, or some such as older Dells have plastic tabs that you gently pull out and the drive is free. Unplug the two cables on the drive.
*Memory: there are two small thumb snaps on each end of the memory stick that you push down and the memory pops free. Be careful replacing the sticks! Carefully line up the slot on the mounting socket on the motherboard with the plastic ridge on the stick, and press down firmly, first on one end and then on the other. You will see the small thumb snaps pop up as the stick settles in to the slot. Make sure the thumb snaps are fully upright, same as originally were.