Why? Find a way to distil whatever process the brain does, emulate it on a computer.
However, and in the end you'd be bored, because you could get rid of all of your human flaws, which is what makes life interesting. It'd be really depressing and boring to be a superintelligent computer.
I take it you have never written any large applications or simulations.
And then that would live on in a new environment, becoming something entirely different.