fujitsu lifebook ah531

So guys I have a fujitsu life book ah531 and it doesn't have a gpu but on internet I have found many same model laptop with nvida gt 525m gpu so my guestion is can I convert my motherboard into one with gpu by soldering gpu components on it? My motherboard: And the one with gpu:

So, my Fujitsu Lifebook AH531 has a pentium b940, its fairly old and i have this i3-2310M from another, broken laptop. So, my question is, is i3-2310M compatible with fujitsu lifebook AH531 ? I really hope someone knows, i tried to check on google and all i found is that this laptop can be...