Aspire R3700 memory upgrade

I have had an Aspire Revo r3700 nettop for a while now, it's good for what it does but I want to upgrade to 4gb RAM. I used Crucial.com's system analyzer and then purchased memory of similar specification (but lower price) elsewhere. The memory I purchased says the following on its label: 2gb 2Rx8 10600S-9-10-F2. I bought 2 of these modules. When I put them into the slots on the mobo, and power up, nothing happens. No beeps, just power on and processor fan spins. I have tried with only one module and with both modules and also with one of the OEM 1gb modules and 1 of these 2gb modules. No joy.

Is there something special I am missing? I tested both modules in an HP Elitebook laptop just to confirm they're good, and they are good. Is there something I am supposed to do before installing the memory into the Revo?

Thanks.

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Clyde

If the original memory works, but the new memory does not, it probably is not compatible. From an internet search, I show it should take DDR3 800 MHz.