I will have to agree with the rest here. If it is under warranty, I would leave it alone unless there is some specific reason you need to upgrade the processor. Ram is usually mush easier to do. At least on my Dell Inspiron 9400 there is a cover that you take off that espouses the memory modules.
That said, I did take apart my son's old Toshiba laptop to try to fix the power plug and install a new keyboard. It was no easy task. (if it would have been a more usable laptop, I would have sent it in to have the work done) Even replacing the keyboard was a challenge.
If I have any advice it is to go slowly. Often there are small cables that need to be disconnected from a component before you can continue. Before unhooking the cable, make sure you can get the cable connected again. This sounds like silly advice, but the cable on the Toshiba keyboard I mentioned above was a bear to hook up again. The problem was it was small, I had very little extra room or cable to work with, and the cable was not stiff on the end. It was like a very small ide cable with nothing to hold onto to reinsert it. Kind of like trying to push a wet noodle through a keyhole with your hands tied behind your back.
Another suggestion is to make a map of what goes where as your taking it apart. Paper and pencil will do, but a digital camera will also help.
Good Luck!
