Lots of things I gotta say
-You cannot replace laptop CPUs as they are soldered (its like school glue for electronics) on to the motherboard.
-If it was a desktop, I wouldn't do it. Prebuilt desktop motherboards often use low wattage sockets to prevent the end user from upgrading.
-Companies also use the "OEM" version of Windows that makes you have to get another copy to perform upgrades.