First, don't make 2 threads about the same topic.
Second, if Lenevo doesn't provide XP drivers on their site, doubt you would get support for it, or find drivers to work with it properly.
Third, why would you buy a current generation laptop and install an OS that is in no way optimized to handle any of the power saving features of it, cpu cores, etc. A lot of new tech has come out since XP and it won't be able to take advantage of it.