Memory upgrade problems on Satellite L30-134

Question

I have just bought 2 x 1GB memory PC4200 for my L30-134 and installed them they work fine in BIOS, show up and read as they should do, but when windows is booting up it will crash with both modules installed, only ever gets to the screen with the loading bar going across and then I get blue screen.
Forgot to make a note of the error code I am afraid... (Fool I know). If I remove one of the modules and install the original 512 module with just 1 of the 1GB ones it will work fine. BIOS has been updated to the latest 3.10 version and still I get the same problem...
because all seems fine from within BIOS I am thinking that its more likely to be a software (windows) problem of some kind maybe some corrupt data in the registry or a virus maybe... has anybody any ideas?
Also, the laptop is actually my step sons and he really wants to have the CPU upgraded from the Celeron 410 to one that's a little faster. When first looking into this we was told that several CPUs were compatible (although not really worth the hassle of installing) they were cel m 450 2 GHz, pent dual core t2060 and t2080, and also the core duo t2250,so he bought the t2250,and no surprises it wouldn't work, or should I say it powered up with no display and the shut off and just epeated the cycle. So did not take a genius to work out it wasn't compat...
I know the t2080 are used in the L30's and are 1.73 533 FSB with 1MB L2 cache- 65nm and do stepping. The t2250 is identical apart from the L2 cache is 2MB and the stepping varies from do to mo depends when u bought it... seeing as ow he already has the CPU he's gonna sell it on and use the cash to buy the one that will work. If anybody has any info that could help make sure that he does not end up going round in circles I would really appreciate it...
Oh and just to make you all laugh it was Toshiba tech line staff member that told him that the CPU would work and that the L30 was able to take 2 x 1GB memory and never once mentioned that there may be issues with both upgrades...
Issues as in neither soddin work....lmao

Answer 1

Hi!
The specs. you posted are correct. Xpress 200 could support dual channel: "Variants available with single or dual channel system memory support ". But there is nothing about dual channel mode in Xpress 200M specs. I have identical modules, but EVEREST doesn't say the modules are running in dual channel mode. So I think the info you found on the website gives the answer, but here are some explanation from Wikipedia to clarify the definitions:
*Dual-channel:*
"Dual-channel-enabled memory controllers utilize two 64-bit data channels, resulting in a total bandwidth of 128-bits, to move data from RAM to the CPU. In order to achieve this, two or more DDR/DDR2 SDRAM memory modules must be installed into matching banks, which are usually color coded on the motherboard. These separate channels allow each memory module access to the memory controller, increasing throughput bandwidth."
*DDR:*
"DDR SDRAM or double data rate synchronous dynamic random access memory is a class of memory integrated circuit used in computers. It achieves greater bandwidth than the preceding single data rate SDRAM by transferring data on the rising and falling edges of the clock signal (double pumped). Effectively, it doubles the transfer rate without increasing the frequency of the memory bus."
*DDR2:*
"Like DDR before it, DDR2 cells transfer data both on the rising and falling edge of the clock (a technique called "dual pumping"). The key difference between DDR and DDR2 is that in DDR2 the bus is clocked at twice the speed of the memory cells, so four words of data can be transferred per memory cell cycle. Thus, without speeding up the memory cells themselves, DDR2 can effectively operate at twice the bus speed of DDR."
*UMA (Unified Memory Architectrue):*
"In computer architecture, Shared Memory Architecture (SMA) refers to a design where the graphics chip does not have its own dedicated memory, and instead shares the main system RAM with the CPU and other components."
Message was edited by: Abe83