Win7 64 bit & Tecra A6 - only 2.99 GB RAM is shown as usable

Right, I have installed Windows 7 64 bit on my Tecra A6 and most seem OK.

I have a request and here I have 4 GB memory installed and Windows indicates 4 GB in system properties. However, it's showing only 2.99 GB as usable.
I thought that the 64-bit versions could use more than that! Or, what I need to do something like a bios upgrade?

Shaun

Hello

Toshiba technical support:

* There are several conditions to use all 4 GB memory on a laptop computer that has 4 GB of memory installed *.

The chipset must support 8 GB of address space.
Intel PM965 and GM965 chipsets and newer or AMD64 CPU could process up to 8 GB.
for example, the family of chipsets Intel 945 endured only upwards of 4 GB address space.

The CPU must support instruction set 64 - bit mode (Intel? EM64T or AMD64).
For Intel CPU, it could be checked on the Intel Web site: http://processorfinder.intel.com/

The BIOS must support the memory remapping feature.
The newer BIOS versions are supporting this feature.

A 64 bit version of the Windows operating system. Note: All the above mentioned conditions must be met to use all 4 GB memory on a laptop.

Your laptop motherboard supports up to 4 GB, Windows 64-bit installed. Perhaps, you must update the Bios.

And 1 thing, in the configuration of the system (administration tools), go to start, click on advanced, uncheck (if indicated) maximum memory

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