There is no way for a common individual without access to specialty equipment to remove and replace a CPU in any notebook computer. There might be some CPUs that are socketed, but most are solder-bound to the mainboard. I have never seen a Sony Vaio mainboard that had a CPU that was replaceable.
In addition, go to http://www.intel.com and review the chipsets required for each CPU. They are different, meaning that the mainboard needs to be replaced to support each CPU.
i have a sony vaio notebook that has a t6400 2.0ghz cpu and i want to upgrade to the p8600 2.4ghz cpu. is the p8600 compatible with my t6400 mobo?

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