CPU upgrade T5500 to T7200 on Toshiba U205-S5057

julyzerg

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Apr 1, 2014
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I (my roommate) have a Toshiba U205 S5057 originally equipped with Intel Core 2 Duo T5500 CPU, 1G Ram, 160G HDD
I've upgraded: Ram to 3G (enough to run Wins7 32-bit pro) on 240G Crucial M500 SSD

I also bought an used T7200 CPU on ebay and put it in, but I got Blue Screen of Death (BSOD) right after windows boot up and goes into desktop. Only if I use safe mode, I dont see BSOD anymore (Windows does recognize CPU T7200 @ 2.00GHz 2.00GHz so CPU may work???). BIOS version is 3.30, RAM and HDD is working properly (testes in other laptop), I put the T5500 back and everything is working fine again, no more BSOD

I did remove cpu driver and let windows install new one (safe mode with networking mode), still not helped.
I tried to re-install windows (delete all old partitions and do fresh install through dvd optical drive), bsod again right after I choose partition, so it may not be the driver (or not...), at this point I have to put T5500 back and re-insall windows, haven't put T7200 back since then.
I dont want to flash bios, it is v3.30 now (latest is 3.50 - both released in 2007) and I dont know how to do it, don't want to brick this brick )

What you guy do when first put new cpu in? What cause of problem here, anybody had changed CPU before, what are needed steps I would need to follow?
 
Check the specifications of the new processor in the manual, and make sure that all your processor specifications in the BIOS, like voltage etc etc, are set to the recommended specs of the new CPU. If you have the voltage set too low for the new CPU for example it may crap out (technical term).
 


this bios does not show up anything rather than RAM so I have no idea (same with old cpu, same with t7200)