Done CPU swap a lot of time.
1. assuming you know how top pop the case of the notebook and remove the CPU.
2. Find you CPU on the Intel ARK, note the TDP and socket type
3. use the search function on the Intel ARK to find the same generation CPU with the similar or lower TDP make sure it's the same kind of socket.
4. Taobax the CPU and replace it.
that is my experience, don't shoot me if i am wrong