Open up the laptop and find the CPU chip. Here's a basic schematic of the chip (http://www.techpowerup.com/reviews/Intel/Core_i7_4770K_Haswell_GPU/). And here is a paper you might want to read before you begin soldering (http://pages.cs.wisc.edu/~rajwar/papers/ieee_micro_haswell.pdf). You'll need to find the points of connection from the last CPU to the GPU, and then solder the other one that connects from the GPU back to the CPU. The entire system is 1 loop (as in an electric system in series). You'll need to make sure that you keep that or you'll have a very expensive paperweight. Keep in mind that this is a 22nm chip. Without the proper visual tools, you won't be able to perform the proper connections.