These are your options.
1) Get a new Laptop.
2) take your laptop apart, find the model number somewhere on the motherboard, (ok maybe you could just research the service number somewhere on the bottom to find that out, but you still have to take it appart) somehow find the technician manual that will tell you just what CPUs that board revision will accept, find out if you need to upgrade the cooling assembly in order to accept your chosen CPU, put the whole thing back together.