So now our laptop looks like this. And we want to access to the Hard Drive and DVD Drive.
In order to remove the touchpad part we need to release the white bus conneciton on the left part, see below how carfully you need to unlock the connections by pulling out the brown piece about a milimiter towards your right.
Once this is done, you can softly pull the bus cable connection with the blue strip attached. Ishould come out without any effort, else means you have not unlocked it correctly.
Voilà....you should now be able to remove the touchpad piece.
Your computer now looks like this: Hard drive on the left, and DVD drive on the right
A closer look to the Hard Drive Unit.