|"What i would like to is install a new more powerful cpu"|
Yeah, I understand that, but my question is - WHY? What do you expect to gain? What is it that your laptop can't do with the current CPU? The built-in underclocking features that I mentioned will vary the CPU speed based on load so unless you're pushing it hard, you'll notice little or no difference in performance. Do you realize that a CPU upgrade will cost approx $200?
Check out this thread from a year ago...same question about the same laptop: