Hi, I posted a question a week ago on this same problem. I now have new infor and maybe someone can help now. I am IT in computers but this is my first laptop. I have a Toshiba A205-S5804. It has an Intel - Santa Rosa CRB Motherboard and also has the 965 chip set family.
My question is; I want to upgrade my processor and I want to be sure the Motherboard can do this. Also any help on the best and easiest way to install it. I may only need take 4 screws out instead of all of them etc. I can do it, but ANYONE who may have done this could be very helpful to me. I'm not worried about this and that. I'm sure its all tied togeather some how inside.I've dissassembled many desktops etc. I was an engineer for in-circuit-test and have been AROUND computers for a long time. I just want to know about the mother board and chipset and any help to easy the installation. I talked to Intel and the chip is compataible with my present one so thats not a problem. They couldn't tell me about anything with Toshiba its a law thing. I also called Toshiba and they wouldn't tell me MUCH of anything because this is still under warrany and they don't give that sort of info anyway. So if anyone knows anything I would appreciate it greatly. ThankYou LorenzDownload this...

http://www.softpedia.com/get/System/System-Info/Everest-Home-Edition.shtml

Install and run it. Look for the motherboard SPECS then check Toshiba's site.

Alan <><

Why do you want to replace a processor if it's still new enough to be under warranty?I doubt anyone can give you advise here on how to replace a processor in a laptop. Who does that? Perhaps, as an engineer, you can do it. But, I believe I'm correct in saying laptops are generally not designed or intended to be upgraded in this way. For the most part, adding memory or maybe a bigger/faster hard drive are the only laptop upgrade options available to laptop owners. The CPU's in most laptops are soldered into the MBoard. REPLACING one is no easy task and your Warranty will be Voided by even opening up the laptop to investigate things.
I'm not here to discourage you but you may want to speak to someone in the business first to see what the difficulty level this task would fall under...