I'm telling you that your hardware inventory says you only have 768 MB of
physical RAM. And I'm not the only one telling you that. You need to open the
box and look at the memory that's physically in the system.

I did not recommend you get 4 GB memory. I posted that as evidence that memory
is cheap. I recommendation is simply to get more memory. 2 GB would be a much
better amount to have and, from the sounds of it, that's all your motherboard
could support.

That's the last I'm going to contribute to this thread.