NavyLCDR said:
Instead of all the conjecture going on, why not just look and see what the OS says is available for RAM?

And also, to the OP - you have a 64-bit processor. You can't run Windows 64-bit on a 32-bit processor.

And it would also further alleviate the guesswork if the OP posted a System screen showing the relevant information...

has my 64bit os not been using all my RAM??-capture.jpg