Satellite A100 - 750 PSAAR, 4 GB of installed RAM, 3 GB of usable RAM

I just upgraded my Satellite A100-750 of 2x2gb 2x1GB RAM.
The BIOS recognizes 4 GB RAM
but the output of said BIOS then "spent 3 GB RAM system".

My Windows 7 Pro 64 bit OS said it has 4 GB of RAM, but only 3 GB are used.

How can I use all my 4 GB of RAM?

It should not be an OS problem but maybe a one BIOS.
I tried to update my BIOS (now system BIOS version 6.0).
but without success.

Any suggestion?
Thank you very much in advance,
Carlo

Hello

In order to use 4 GB RAM three different factors are important.

(1) BIOS
(2) chipset
(3) OS

You will be able to use 4 GB of RAM if these 3 parts provide support for 4 GB RAM.

Win 7 64 bit is 4 GB of RAM, so you should check first the capable chipset.
Check chipset in your laptop computer and research on the Intel page for details if 4 GB of RAM are supported.
If 4 GB of RAM are supported by the chipset then the BIOS does not appear to provide support for 4 GB.

Welcome them

Tags: Toshiba

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