Memory upgrade problem on Satellite L300

My laptop is a Satellite L300 PSLB8A-047004. I purchased a kit of 2 x 2GB modules and inserted carefully following the instructions (they clicked into place). On restart the Power light was lit, the fan was on but no further activity, and the display remained black, no disk activity. Originally there was 1-off 1GB PC2-6400S module installed and Ive checked that the new ones are PC2-6400S. I took them out and put them back in but same result. When I put the original module back in it worked fine.
I then tried just one of the new modules in place of the original one but no luck so the original module is now back in and all seems OK.
Any suggestions please? If there was module damage from being handled then the original 1GB module should also be damaged as its the one thats been handled the most.
Kev.

This is typical behaviour by compatibility problems. Which modules you have, I mean who is manufacturer?
I recommend you to use high quality products from Kingston or Toshiba. For more info about compatible modules for your notebook visit http://www.kingston.com/worldwide/default.asp

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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:
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Message was edited by: Abe83

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This question was solved.
View Solution.

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   As for: My question is this, if I purchase an 8 gig memory module and install it in the working slot, will that work and will the system show that I have 8 gigs? Or will this system only recognize 8 gigs if it's 2 4 gigs in each slot?
If your running Windows 7, Yes, your system will recognize and use the entire eight gigs.
If it were a rattler. . . .

Memory upgrade problem on Satellite L300

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