Problem with 4GB of RAM

Looking at the BIOS up dates they relate to AM2 processor socket updates, the mother board can accept an additional CPU mounting board for the newer AMD AM2 socket processors. The strange thing is that going into setup shows all is fine with all four modules identified and running at DDR 400.

Running windows 7 32 bit. So I should see at least 3.5GB in task manager I would of thought.

I have taken out the 2 x 512 modules and have 2 x 1GB crucial in first two slots at the moment.

Curious how much memory the graphics card has.
This will effect the amount of Ram Windows 32-Bit will see also.

I suppose I could add the 4 x 1GB modules and reduce the speed from DDR 400 and see if that stops the BSOD?

What do you guys think? I don't like to keep crashing the PC as Windows tries to fix everything on its own.

Windows 7 32bit will only utilise up to 3GB RAM, taking in to account your graphics.

Graphics card is NVIDIA 8800 GTS512 PCI Express

You really should consider Windows 7 64-Bit if you plan on using 4GB memory

No its not doing your system any good keep crashing it i believe you said it ran OK with 2X1GB & 2X512MB = 3GB stay at that M8 if you want to use 32bit.

I went with 32 bit as I was not sure about availability of 64bit drivers for the mother board.

I should be able to run 2 x 1GB and 2 x 512 without a problem, but it still BSOD after an hour or so.

I have an idea, I will run setup and look at what voltage the board is running the crutial modules, I think the crucial spec was 2.6V