My Alienware is overheating and once it gets to 75*C, its performance is seriously affected. Only when it gets back to 60*C does the performance return to the level it should be. In my research, I found the problem could be the thermal paste has dehydrated to the point it can no longer absorb the heat emanating from the CPU or GPU. Can I open my Alienware to clean the old paste and replace it with a new one?