A single jewelry Phillips head screw driver would do the job. Sharpie marker, small magnet pen and a flash light would make the job easier. Make sure you account for all the screws removed. Luckily, there are only three different sizes in total. We will go through this step by step. Kitchen table with good lighting will do, if your better half does not mind.
Since resetting the CMOS battery and replacing the CPU take the same approach. I will do this in a single pass. One or two of the screws might not want to come out of the hole, a small magnet pen will do the job; making sure you retrieve the screw or it will simply disappear.
Turn the laptop up-side-down, remove the battery.
The memory module could stay put, don't bother with them. Remove the two screws holding the hard drive and slide it out.
Unscrew and remove the wireless PCIe compartment cover.
Carefully disconnect the SMP main and aux cable; they snap out and remove the card.
Next is to unscrew all the remaining screws you could find with the laptop still up-side-down... look carefully they might be out of sight.
The two short screws from the above photos hold the hinge-plate on topside.
The two plastic taps are holding the top plate; use a screw drive to push the top plate so that it has enough room to pry it loose from top side.
There are two screws on each side holding the LCD panels; remove but leave one of them for now.
Unplug the VGA connector.
There are two SMP wires (Black & White) connecting to the wireless PCIe card that were disconnected previously from the card. Get them out of the wire-guide and slowly pull them out of the way. Now, remove the last screw holding the LCD panel, remove the panel from the chassis.
Removing the keyboard becomes easy; don't forget to unplug the flex ribbon cable gently (they break easily).
From here on it gets easier. There are two more screws hidden at the top two corners. Lifting the "top" cover should not present any problem. Slide the DVD drive out. Don't forget the locations and number of screws you remove; I used a Sharpie marker to mark the location.