Satellite A100 PSAA2A - BIOS recognize only 1 GB of RAM after upgrade

Hello

I have a Satellite A100 PSAA2A. RAM is up to 2GB (2 slots).
Now, I have 256MB + 512 MB (Kingston KVR533D2/S4/512) total = 768 MB (Samsung 256 MB DDRII 533FSB).
It works well

I want to improve my RAM. I've got Kingston KTT533D2 / 1 G
I have 512 MB + 1024 MB = 1.5 GB

I removed 256 MB to 1 GB. Now she has 512 MB and 1024 MB
But BIOS recognizes only 1 GB (Windows XP as well). I changed my slot machines, a different combination made - always 1 GB (not 1, 5 GB)

I checked each memory separately 256 MB, 512 MB, 1024MB - works well, but combination of combination and 512 MB + 1024 MB 256 MB + 1024 MB do not work.

I did a BIOS upgrade and set version 2.3

Any ideas guys?

Thank you.

I m not sure but I think the problem are two different modules. They come from different manufacturers have different abilities.

If you want to, or more than 1 GB RAM, use should use the same modules. At a time when prices are cheap.

But you can also test the RAM with special tools like Memtest86:
[www.memtest86.org]

Tags: Toshiba

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