I have an m18xr2 and I tore it apart so many times I could tell u from memory how to do it, just find a complete tear down video on youtube, and watch it step by step, keep pausing and going, one piece of advice, the white tan clip holding the harddrive cable needs to be pulled up by the edges and its really weak and will break if u pull on it too much, so just pry it gently by the sides, u can leave the 2 silver screws under the hard drive out, there is no need to put them back, removing the gpu/cpu heatsinks is not that hard, just take out the 4 screws and gently pry them off, make sure to note the thermal pad locations on the gpu. repasting is easy, just get a tube of ic dimond, put a drop on the gpu and squish it down with the heatsink, for the cpu put a line of thermal paste and apply the heatsink, I would insert a small + screw driver into the heatsink fins to make them look like this I()()()()()I for more air flow. follow the video to take out the motherboard, u can then have the power jack repaired by a pro, probly will be cheaper. the only thing I would recommend to upgrade is the ram get 16gb 1600mhz cl11 or cl9 ram, im running an i7-3610 cpu and run games on max, ur cpu should be fine, dell sold the m18x's with 680m gpu's last, so I would just go with one of those if u want more eye candy. that's all u really need to do to it, u will still be able to play games at decent settings.