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Vaio Won't Recognize New Memory

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#1 rsh9116


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Posted 21 October 2006 - 05:34 PM

I finally decided to upgrade the memory in my PC from the original 512MB, (2, 256MB PC2100 modules) to the maximum 1GB stated in the specs. The memory I received from the company IT guy is 2, 512MB, PC2700 modules, which are slightly faster, but supposedly still compatible. Anyway, the machine boots up OK, but it only recognizes 256MB from each module, leaving me with the 512MB I started with...

The PC manufacturer On-line support cryptically tells me that I must use PC2100 modules for the any upgrade, but this doesn't make any sense as to how this would cause the upper half of the memory to be ignored. Several aftermarket memory providers actually spec these PC2700 modules as the correct ones for this machine.

Any ideas as to why this might be happening?

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#2 usasma


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Posted 22 October 2006 - 07:52 AM

Could be problems with the memory that the IT guy gave you - see if he'll swap them out for another set.

You can try running the memory test here to see if the sticks are OK: http://www.memtest86.com/

Boot from the floppy/CD and let the test run for at least 2 hours - overnight is better. If you start getting errors, stop the test - the memory is bad.
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