Satellite M100-126 - Win 7 32 bit indicates 'only' 3 GB of memory usable

Hello

Here's the situation:

I have a Toshiba satellite M100-126 (PSMA1E - 0PV021FR) running Windows 7 32 bit.
He had originally 2gigs of Ram, but after that my brother's cell phone broke down (motherboard failure) I took his 2x2gig of ram and installed in my laptop.

Initially, the BIOS detected only 3gig, so I flashed the bios than that recommended by the Toshiba Download Center, i.e. v 3.0, http://support.toshiba-tro.de/tools/eula/calleula.asp?ID=66238 direct link (if it works). There is also a version 5.6, only for Vista, but I did not use that one.

For now: the bios detects 4gigs and Windows, but windows says 'only' memory usable 3gigs.
Windows resource allocation, 1gig is 'reserved material', so this memory usable 3gig. If I replace one of the modules by a 1gig module 2 giga, I get only 2 MB of the reserved equipment, and 3 gigs installed memory are usable...

Here are the questions now:
I am aware of the limit of memory for 32-bit systems, and that I won't be able to use the full 4gigs of anyway, but my brother got 3.5 GB of memory can be used on 32-bit system... Is it

Hello

Win 32 bit can allocate only 3.2 GB (not 3.5 GB)
It is the limitation of all 32-bit operating systems.
I put t see any problems here the BIOS detects 4 GB of RAM. It s ok.
Windows can use 3 GB only because the other party is used by the graphics card.

The GPU can share a part of the main memory too and it also depends on the available main memory.

Good bye

Tags: Toshiba

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